Vulnerability-Lookup

CVE-2026-20113 (GCVE-0-2026-20113)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:08 – Updated: 2026-03-27 15:02

Summary

A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Assigner

cisco

References

URL

Tags

https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XE Software	Affected: 16.6.1 Affected: 16.6.2 Affected: 16.6.3 Affected: 16.6.4 Affected: 16.6.5 Affected: 16.6.4a Affected: 16.6.5a Affected: 16.6.6 Affected: 16.6.7 Affected: 16.6.8 Affected: 16.6.9 Affected: 16.6.10 Affected: 16.7.1 Affected: 16.7.1a Affected: 16.7.1b Affected: 16.7.2 Affected: 16.7.3 Affected: 16.7.4 Affected: 16.8.1 Affected: 16.8.1a Affected: 16.8.1b Affected: 16.8.1s Affected: 16.8.1c Affected: 16.8.1d Affected: 16.8.2 Affected: 16.8.1e Affected: 16.8.3 Affected: 16.9.1 Affected: 16.9.2 Affected: 16.9.1a Affected: 16.9.1b Affected: 16.9.1s Affected: 16.9.3 Affected: 16.9.4 Affected: 16.9.5 Affected: 16.9.5f Affected: 16.9.6 Affected: 16.9.7 Affected: 16.9.8 Affected: 16.10.1 Affected: 16.10.1a Affected: 16.10.1b Affected: 16.10.1s Affected: 16.10.1c Affected: 16.10.1e Affected: 16.10.1d Affected: 16.10.2 Affected: 16.10.1f Affected: 16.10.1g Affected: 16.10.3 Affected: 16.11.1 Affected: 16.11.1a Affected: 16.11.1b Affected: 16.11.2 Affected: 16.11.1s Affected: 16.12.1 Affected: 16.12.1s Affected: 16.12.1a Affected: 16.12.1c Affected: 16.12.1w Affected: 16.12.2 Affected: 16.12.1y Affected: 16.12.2a Affected: 16.12.3 Affected: 16.12.8 Affected: 16.12.2s Affected: 16.12.1x Affected: 16.12.1t Affected: 16.12.4 Affected: 16.12.3s Affected: 16.12.3a Affected: 16.12.4a Affected: 16.12.5 Affected: 16.12.6 Affected: 16.12.1z1 Affected: 16.12.5a Affected: 16.12.5b Affected: 16.12.1z2 Affected: 16.12.6a Affected: 16.12.7 Affected: 16.12.10a Affected: 16.12.11 Affected: 17.1.1 Affected: 17.1.1a Affected: 17.1.1s Affected: 17.1.1t Affected: 17.1.3 Affected: 17.2.1 Affected: 17.2.1r Affected: 17.2.1a Affected: 17.2.1v Affected: 17.2.2 Affected: 17.2.3 Affected: 17.3.1 Affected: 17.3.2 Affected: 17.3.3 Affected: 17.3.1a Affected: 17.3.1w Affected: 17.3.2a Affected: 17.3.1x Affected: 17.3.1z Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.4a Affected: 17.3.6 Affected: 17.3.4b Affected: 17.3.4c Affected: 17.3.5a Affected: 17.3.5b Affected: 17.3.7 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.4.1 Affected: 17.4.2 Affected: 17.4.1a Affected: 17.4.1b Affected: 17.4.2a Affected: 17.5.1 Affected: 17.5.1a Affected: 17.6.1 Affected: 17.6.2 Affected: 17.6.1w Affected: 17.6.1a Affected: 17.6.1x Affected: 17.6.3 Affected: 17.6.1y Affected: 17.6.1z Affected: 17.6.3a Affected: 17.6.4 Affected: 17.6.1z1 Affected: 17.6.5 Affected: 17.6.6 Affected: 17.6.6a Affected: 17.6.5a Affected: 17.6.7 Affected: 17.6.8 Affected: 17.6.8a Affected: 17.7.1 Affected: 17.7.1a Affected: 17.7.1b Affected: 17.7.2 Affected: 17.10.1 Affected: 17.10.1a Affected: 17.10.1b Affected: 17.8.1 Affected: 17.8.1a Affected: 17.9.1 Affected: 17.9.1w Affected: 17.9.2 Affected: 17.9.1a Affected: 17.9.1x Affected: 17.9.1y Affected: 17.9.3 Affected: 17.9.2a Affected: 17.9.1x1 Affected: 17.9.3a Affected: 17.9.4 Affected: 17.9.1y1 Affected: 17.9.5 Affected: 17.9.4a Affected: 17.9.5a Affected: 17.9.5b Affected: 17.9.6 Affected: 17.9.6a Affected: 17.9.7 Affected: 17.9.5e Affected: 17.9.5f Affected: 17.9.8 Affected: 17.9.7a Affected: 17.9.7b Affected: 17.11.1 Affected: 17.11.1a Affected: 17.12.1 Affected: 17.12.1w Affected: 17.12.1a Affected: 17.12.1x Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.2a Affected: 17.12.1y Affected: 17.12.1z Affected: 17.12.4 Affected: 17.12.3a Affected: 17.12.1z1 Affected: 17.12.1z2 Affected: 17.12.4a Affected: 17.12.5 Affected: 17.12.4b Affected: 17.12.1z3 Affected: 17.12.5a Affected: 17.12.1z4 Affected: 17.12.6 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.12.6a Affected: 17.12.5d Affected: 17.12.1z5 Affected: 17.12.1z6 Affected: 17.12.6b Affected: 17.13.1 Affected: 17.13.1a Affected: 17.14.1 Affected: 17.14.1a Affected: 17.15.1 Affected: 17.15.1w Affected: 17.15.1a Affected: 17.15.2 Affected: 17.15.1b Affected: 17.15.1x Affected: 17.15.1z Affected: 17.15.3 Affected: 17.15.2c Affected: 17.15.2a Affected: 17.15.1y Affected: 17.15.2b Affected: 17.15.3a Affected: 17.15.4 Affected: 17.15.3b Affected: 17.15.4d Affected: 17.15.4e Affected: 17.16.1 Affected: 17.16.1a Affected: 17.17.1 Affected: 17.18.1 Affected: 17.18.1w Affected: 17.18.1a Affected: 17.18.1x

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                "id": "CVE-2026-20113",
                "options": [
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                    "Exploitation": "none"
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                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T15:02:14.431387Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "status": "affected",
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              "status": "affected",
              "version": "17.6.6"
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              "status": "affected",
              "version": "17.6.6a"
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
              "version": "17.6.8a"
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              "status": "affected",
              "version": "17.7.1"
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              "status": "affected",
              "version": "17.7.1a"
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              "status": "affected",
              "version": "17.7.1b"
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              "status": "affected",
              "version": "17.7.2"
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              "status": "affected",
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              "version": "17.10.1b"
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              "status": "affected",
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              "status": "affected",
              "version": "17.8.1a"
            },
            {
              "status": "affected",
              "version": "17.9.1"
            },
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              "status": "affected",
              "version": "17.9.1w"
            },
            {
              "status": "affected",
              "version": "17.9.2"
            },
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              "status": "affected",
              "version": "17.9.1a"
            },
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              "status": "affected",
              "version": "17.9.1x"
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              "status": "affected",
              "version": "17.9.1y"
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              "status": "affected",
              "version": "17.9.3"
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              "status": "affected",
              "version": "17.9.2a"
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              "status": "affected",
              "version": "17.9.1x1"
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              "status": "affected",
              "version": "17.9.3a"
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              "status": "affected",
              "version": "17.9.4"
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              "version": "17.9.1y1"
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              "status": "affected",
              "version": "17.9.5"
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              "status": "affected",
              "version": "17.9.4a"
            },
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              "status": "affected",
              "version": "17.9.5a"
            },
            {
              "status": "affected",
              "version": "17.9.5b"
            },
            {
              "status": "affected",
              "version": "17.9.6"
            },
            {
              "status": "affected",
              "version": "17.9.6a"
            },
            {
              "status": "affected",
              "version": "17.9.7"
            },
            {
              "status": "affected",
              "version": "17.9.5e"
            },
            {
              "status": "affected",
              "version": "17.9.5f"
            },
            {
              "status": "affected",
              "version": "17.9.8"
            },
            {
              "status": "affected",
              "version": "17.9.7a"
            },
            {
              "status": "affected",
              "version": "17.9.7b"
            },
            {
              "status": "affected",
              "version": "17.11.1"
            },
            {
              "status": "affected",
              "version": "17.11.1a"
            },
            {
              "status": "affected",
              "version": "17.12.1"
            },
            {
              "status": "affected",
              "version": "17.12.1w"
            },
            {
              "status": "affected",
              "version": "17.12.1a"
            },
            {
              "status": "affected",
              "version": "17.12.1x"
            },
            {
              "status": "affected",
              "version": "17.12.2"
            },
            {
              "status": "affected",
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            },
            {
              "status": "affected",
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            },
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              "status": "affected",
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\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ\", \"name\": \"cisco-sa-iox-crlf-NvgKTKJZ\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user.\\r\\n\\r This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-93\", \"description\": \"Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-03-25T16:08:39.046Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20113\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-27T15:02:21.557Z\", \"dateReserved\": \"2025-10-08T11:59:15.375Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-03-25T16:08:39.046Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

CISCO-SA-IOX-CRLF-NVGKTKJZ

Vulnerability from csaf_cisco - Published: 2026-03-25 16:00 - Updated: 2026-03-25 16:00

Summary

Cisco IOx Application Hosting Environment Carriage Return Line Feed Injection Vulnerability

Notes

Summary: A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the March 2026 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2026 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75297"].

Vulnerable Products: At the time of publication, this vulnerability affected Cisco devices if they were running a vulnerable release of Cisco IOS XE Software that was configured for the Cisco IOx application hosting environment. The Cisco IOx application hosting environment is not configured by default. For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory. Determine the IOx Application Hosting Configuration To determine whether the Cisco IOx application hosting environment is configured in Cisco IOS XE Software, use the show run | include iox command in privileged EXEC mode, as shown in the following example: Switch#show run | include iox iox If the output contains a line with iox only, as shown in the preceding example, the device is affected by this vulnerability.

Products Confirmed Not Vulnerable: Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability. Cisco has confirmed the following Cisco products that support Cisco IOx application hosting environment are not affected by this vulnerability: 800 Series Industrial Integrated Services Routers (ISRs) Catalyst 3650 Series Switches Catalyst 3850 Series Switches Catalyst 9100 Family of Access Points (COS-APs) CGR1000 Compute Modules IC3000 Industrial Compute Gateways IR510 WPAN Industrial Routers IOS Software NX-OS Software Cisco has also confirmed that this vulnerability does not affect Cisco IOS XR Software.

Workarounds: There are no workarounds that address this vulnerability.

Fixed Software: Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To fully remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory. Cisco IOS and IOS XE Software To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (“Combined First Fixed”). To use the tool, go to the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps: Choose which advisories the tool will search—only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"], or all advisories. Enter a release number—for example, 15.9(3)M2 or 17.3.3. Click Check. Only this advisory All Critical and High advisories All advisories

Vulnerability Policy: To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Exploitation and Public Announcements: The Cisco Product Security Incident Response Team (PSIRT) is aware that a public announcement is available for the vulnerability that is described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.

Source: Cisco would like to thank the Unit 515 team of OPSWAT for reporting this vulnerability.

Legal Disclaimer: SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT The Cisco Support and Downloads ["https://www.cisco.com/c/en/us/support/index.html"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid. Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories ["https://www.cisco.com/go/psirt"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"] or their contracted maintenance providers. LEGAL DISCLAIMER DETAILS CISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. Copies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories ["https://www.cisco.com/go/psirt"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"] for more information.

CVE-2026-20113

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Fix Cisco has released software updates that address this vulnerability. https://software.cisco.com

References

URL

Category

	https://sec.cloudapps.cisco.com/security/center/c…	self
	https://sec.cloudapps.cisco.com/security/center/v…	external
	https://sec.cloudapps.cisco.com/security/center/r…	external
	https://sec.cloudapps.cisco.com/security/center/s…	external
	https://sec.cloudapps.cisco.com/security/center/r…	external
	http://www.cisco.com/web/about/security/psirt/sec…	external
	https://www.cisco.com/c/en/us/support/index.html	external
	https://www.cisco.com/c/en/us/support/web/tsd-cis…	external
	https://sec.cloudapps.cisco.com/security/center/r…	external
	https://www.cisco.com/go/psirt	external

Acknowledgments

JSON

To clipboard

{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank the Unit 515 team of OPSWAT for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user.\r\n\r\nThis vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the March 2026 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2026 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75297\"].",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "At the time of publication, this vulnerability affected Cisco devices if they were running a vulnerable release of Cisco IOS XE Software that was configured for the Cisco IOx application hosting environment. The Cisco IOx application hosting environment is not configured by default.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determine the IOx Application Hosting Configuration\r\nTo determine whether the Cisco IOx application hosting environment is configured in Cisco IOS XE Software, use the show run | include iox command in privileged EXEC mode, as shown in the following example:\r\n\r\n\r\nSwitch#show run | include iox\r\niox\r\n\r\nIf the output contains a line with iox only, as shown in the preceding example, the device is affected by this vulnerability.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed the following Cisco products that support Cisco IOx application hosting environment are not affected by this vulnerability:\r\n\r\n800 Series Industrial Integrated Services Routers (ISRs)\r\nCatalyst 3650 Series Switches\r\nCatalyst 3850 Series Switches\r\nCatalyst 9100 Family of Access Points (COS-APs)\r\nCGR1000 Compute Modules\r\nIC3000 Industrial Compute Gateways\r\nIR510 WPAN Industrial Routers\r\nIOS Software\r\nNX-OS Software\r\n\r\nCisco has also confirmed that this vulnerability does not affect Cisco IOS XR Software.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To fully remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.\r\n        Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (\u201cCombined First Fixed\u201d).\r\n\r\nTo use the tool, go to the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps:\r\n\r\nChoose which advisories the tool will search\u2014only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"], or all advisories.\r\nEnter a release number\u2014for example, 15.9(3)M2 or 17.3.3.\r\nClick Check.\r\n\r\n       Only this advisory  All Critical and High advisories  All advisories",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
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        "text": "The Cisco Product Security Incident Response Team (PSIRT) is aware that a public announcement is available for the vulnerability that is described in this advisory.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank the Unit 515 team of OPSWAT for reporting this vulnerability.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT\r\n\r\nThe Cisco Support and Downloads [\"https://www.cisco.com/c/en/us/support/index.html\"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid.\r\n\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories [\"https://www.cisco.com/go/psirt\"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"] or their contracted maintenance providers.\r\n    LEGAL DISCLAIMER DETAILS\r\n\r\nCISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nCopies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories [\"https://www.cisco.com/go/psirt\"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] for more information.",
        "title": "Legal Disclaimer"
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    "references": [
      {
        "category": "self",
        "summary": "Cisco IOx Application Hosting Environment Carriage Return Line Feed Injection Vulnerability",
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      },
      {
        "category": "external",
        "summary": "Cisco Event Response: March 2026 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
        "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75297"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
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      {
        "category": "external",
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        "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
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        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"
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      {
        "category": "external",
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        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
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        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
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        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "the advisories",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Cisco IOx Application Hosting Environment Carriage Return Line Feed Injection Vulnerability",
    "tracking": {
      "current_release_date": "2026-03-25T16:00:00+00:00",
      "generator": {
        "date": "2026-03-27T21:15:45+00:00",
        "engine": {
          "name": "TVCE"
        }
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      "id": "cisco-sa-iox-crlf-NvgKTKJZ",
      "initial_release_date": "2026-03-25T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2026-03-25T15:51:08+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
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  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.6.1",
                    "product": {
                      "name": "16.6.1",
                      "product_id": "CSAFPID-218901"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.2",
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                      "name": "16.6.2",
                      "product_id": "CSAFPID-228706"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.3",
                    "product": {
                      "name": "16.6.3",
                      "product_id": "CSAFPID-231682"
                    }
                  },
                  {
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5",
                    "product": {
                      "name": "16.6.5",
                      "product_id": "CSAFPID-241736"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4s",
                    "product": {
                      "name": "16.6.4s",
                      "product_id": "CSAFPID-244900"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4a",
                    "product": {
                      "name": "16.6.4a",
                      "product_id": "CSAFPID-247629"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5a",
                    "product": {
                      "name": "16.6.5a",
                      "product_id": "CSAFPID-252235"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.6",
                    "product": {
                      "name": "16.6.6",
                      "product_id": "CSAFPID-252914"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5b",
                    "product": {
                      "name": "16.6.5b",
                      "product_id": "CSAFPID-258170"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.7",
                    "product": {
                      "name": "16.6.7",
                      "product_id": "CSAFPID-261241"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.7a",
                    "product": {
                      "name": "16.6.7a",
                      "product_id": "CSAFPID-270097"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.8",
                    "product": {
                      "name": "16.6.8",
                      "product_id": "CSAFPID-277148"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.9",
                    "product": {
                      "name": "16.6.9",
                      "product_id": "CSAFPID-280801"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.10",
                    "product": {
                      "name": "16.6.10",
                      "product_id": "CSAFPID-283835"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.6"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.7.1",
                    "product": {
                      "name": "16.7.1",
                      "product_id": "CSAFPID-218903"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.1a",
                    "product": {
                      "name": "16.7.1a",
                      "product_id": "CSAFPID-231389"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.1b",
                    "product": {
                      "name": "16.7.1b",
                      "product_id": "CSAFPID-232767"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.2",
                    "product": {
                      "name": "16.7.2",
                      "product_id": "CSAFPID-236837"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.3",
                    "product": {
                      "name": "16.7.3",
                      "product_id": "CSAFPID-244070"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.4",
                    "product": {
                      "name": "16.7.4",
                      "product_id": "CSAFPID-258388"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.7"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.8.1",
                    "product": {
                      "name": "16.8.1",
                      "product_id": "CSAFPID-218905"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1a",
                    "product": {
                      "name": "16.8.1a",
                      "product_id": "CSAFPID-235307"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1b",
                    "product": {
                      "name": "16.8.1b",
                      "product_id": "CSAFPID-235858"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1s",
                    "product": {
                      "name": "16.8.1s",
                      "product_id": "CSAFPID-236834"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1c",
                    "product": {
                      "name": "16.8.1c",
                      "product_id": "CSAFPID-237460"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1d",
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                      "product_id": "CSAFPID-303045"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.2c",
                    "product": {
                      "name": "17.15.2c",
                      "product_id": "CSAFPID-303212"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.2a",
                    "product": {
                      "name": "17.15.2a",
                      "product_id": "CSAFPID-303213"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.1y",
                    "product": {
                      "name": "17.15.1y",
                      "product_id": "CSAFPID-303214"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.2b",
                    "product": {
                      "name": "17.15.2b",
                      "product_id": "CSAFPID-303311"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.3a",
                    "product": {
                      "name": "17.15.3a",
                      "product_id": "CSAFPID-304866"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4",
                    "product": {
                      "name": "17.15.4",
                      "product_id": "CSAFPID-305238"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.3b",
                    "product": {
                      "name": "17.15.3b",
                      "product_id": "CSAFPID-305275"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4a",
                    "product": {
                      "name": "17.15.4a",
                      "product_id": "CSAFPID-306558"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4b",
                    "product": {
                      "name": "17.15.4b",
                      "product_id": "CSAFPID-306610"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4c",
                    "product": {
                      "name": "17.15.4c",
                      "product_id": "CSAFPID-306648"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4s1",
                    "product": {
                      "name": "17.15.4s1",
                      "product_id": "CSAFPID-306814"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.15.4d",
                    "product": {
                      "name": "17.15.4d",
                      "product_id": "CSAFPID-306891"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.15"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "17.16.1",
                    "product": {
                      "name": "17.16.1",
                      "product_id": "CSAFPID-301219"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.16.1a",
                    "product": {
                      "name": "17.16.1a",
                      "product_id": "CSAFPID-302979"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.16"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "17.17.1",
                    "product": {
                      "name": "17.17.1",
                      "product_id": "CSAFPID-302626"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.17"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "17.18.1",
                    "product": {
                      "name": "17.18.1",
                      "product_id": "CSAFPID-303216"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.18.1w",
                    "product": {
                      "name": "17.18.1w",
                      "product_id": "CSAFPID-305277"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.18.1a",
                    "product": {
                      "name": "17.18.1a",
                      "product_id": "CSAFPID-306557"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.18.1x",
                    "product": {
                      "name": "17.18.1x",
                      "product_id": "CSAFPID-306850"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.18"
              }
            ],
            "category": "product_family",
            "name": "Cisco IOS XE Software"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20113",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwq69499"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
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          "CSAFPID-218903",
          "CSAFPID-218905",
          "CSAFPID-225856",
          "CSAFPID-225858",
          "CSAFPID-227918",
          "CSAFPID-227920",
          "CSAFPID-228706",
          "CSAFPID-231389",
          "CSAFPID-231682",
          "CSAFPID-232008",
          "CSAFPID-232767",
          "CSAFPID-233155",
          "CSAFPID-235307",
          "CSAFPID-235858",
          "CSAFPID-236834",
          "CSAFPID-236837",
          "CSAFPID-237460",
          "CSAFPID-241736",
          "CSAFPID-242308",
          "CSAFPID-242834",
          "CSAFPID-243362",
          "CSAFPID-244070",
          "CSAFPID-244071",
          "CSAFPID-244530",
          "CSAFPID-244900",
          "CSAFPID-245375",
          "CSAFPID-245377",
          "CSAFPID-247629",
          "CSAFPID-248242",
          "CSAFPID-249171",
          "CSAFPID-250629",
          "CSAFPID-251075",
          "CSAFPID-251166",
          "CSAFPID-251225",
          "CSAFPID-252045",
          "CSAFPID-252235",
          "CSAFPID-252271",
          "CSAFPID-252272",
          "CSAFPID-252913",
          "CSAFPID-252914",
          "CSAFPID-254688",
          "CSAFPID-254712",
          "CSAFPID-257955",
          "CSAFPID-257984",
          "CSAFPID-258170",
          "CSAFPID-258229",
          "CSAFPID-258388",
          "CSAFPID-258900",
          "CSAFPID-260741",
          "CSAFPID-260917",
          "CSAFPID-261240",
          "CSAFPID-261241",
          "CSAFPID-261465",
          "CSAFPID-262390",
          "CSAFPID-262549",
          "CSAFPID-262588",
          "CSAFPID-262590",
          "CSAFPID-262592",
          "CSAFPID-262595",
          "CSAFPID-264096",
          "CSAFPID-265735",
          "CSAFPID-265841",
          "CSAFPID-266259",
          "CSAFPID-267110",
          "CSAFPID-267240",
          "CSAFPID-267605",
          "CSAFPID-268921",
          "CSAFPID-270097",
          "CSAFPID-271798",
          "CSAFPID-271938",
          "CSAFPID-272047",
          "CSAFPID-272932",
          "CSAFPID-273112",
          "CSAFPID-273445",
          "CSAFPID-273448",
          "CSAFPID-273509",
          "CSAFPID-273649",
          "CSAFPID-274818",
          "CSAFPID-274832",
          "CSAFPID-275538",
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          "CSAFPID-278020",
          "CSAFPID-278023",
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          "CSAFPID-278504",
          "CSAFPID-278881",
          "CSAFPID-279338",
          "CSAFPID-279339",
          "CSAFPID-280463",
          "CSAFPID-280555",
          "CSAFPID-280651",
          "CSAFPID-280652",
          "CSAFPID-280770",
          "CSAFPID-280783",
          "CSAFPID-280801",
          "CSAFPID-280899",
          "CSAFPID-280937",
          "CSAFPID-280938",
          "CSAFPID-280939",
          "CSAFPID-281320",
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          "CSAFPID-302964",
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          "CSAFPID-303212",
          "CSAFPID-303213",
          "CSAFPID-303214",
          "CSAFPID-303216",
          "CSAFPID-303308",
          "CSAFPID-303311",
          "CSAFPID-303316",
          "CSAFPID-303324",
          "CSAFPID-303361",
          "CSAFPID-303470",
          "CSAFPID-303471",
          "CSAFPID-304035",
          "CSAFPID-304070",
          "CSAFPID-304866",
          "CSAFPID-305238",
          "CSAFPID-305275",
          "CSAFPID-305276",
          "CSAFPID-305277",
          "CSAFPID-306388",
          "CSAFPID-306389",
          "CSAFPID-306557",
          "CSAFPID-306558",
          "CSAFPID-306610",
          "CSAFPID-306611",
          "CSAFPID-306648",
          "CSAFPID-306804",
          "CSAFPID-306814",
          "CSAFPID-306815",
          "CSAFPID-306849",
          "CSAFPID-306850",
          "CSAFPID-306891",
          "CSAFPID-306957"
        ]
      },
      "release_date": "2026-03-25T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-225856",
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            "CSAFPID-306389",
            "CSAFPID-306557",
            "CSAFPID-306558",
            "CSAFPID-306610",
            "CSAFPID-306611",
            "CSAFPID-306648",
            "CSAFPID-306804",
            "CSAFPID-306814",
            "CSAFPID-306815",
            "CSAFPID-306849",
            "CSAFPID-306850",
            "CSAFPID-306891",
            "CSAFPID-306957"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-227918",
            "CSAFPID-227920",
            "CSAFPID-228706",
            "CSAFPID-231389",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-232767",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-235858",
            "CSAFPID-236834",
            "CSAFPID-236837",
            "CSAFPID-237460",
            "CSAFPID-241736",
            "CSAFPID-242308",
            "CSAFPID-242834",
            "CSAFPID-243362",
            "CSAFPID-244070",
            "CSAFPID-244071",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245375",
            "CSAFPID-245377",
            "CSAFPID-247629",
            "CSAFPID-248242",
            "CSAFPID-249171",
            "CSAFPID-250629",
            "CSAFPID-251075",
            "CSAFPID-251166",
            "CSAFPID-251225",
            "CSAFPID-252045",
            "CSAFPID-252235",
            "CSAFPID-252271",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-252914",
            "CSAFPID-254688",
            "CSAFPID-254712",
            "CSAFPID-257955",
            "CSAFPID-257984",
            "CSAFPID-258170",
            "CSAFPID-258229",
            "CSAFPID-258388",
            "CSAFPID-258900",
            "CSAFPID-260741",
            "CSAFPID-260917",
            "CSAFPID-261240",
            "CSAFPID-261241",
            "CSAFPID-261465",
            "CSAFPID-262390",
            "CSAFPID-262549",
            "CSAFPID-262588",
            "CSAFPID-262590",
            "CSAFPID-262592",
            "CSAFPID-262595",
            "CSAFPID-264096",
            "CSAFPID-265735",
            "CSAFPID-265841",
            "CSAFPID-266259",
            "CSAFPID-267110",
            "CSAFPID-267240",
            "CSAFPID-267605",
            "CSAFPID-268921",
            "CSAFPID-270097",
            "CSAFPID-271798",
            "CSAFPID-271938",
            "CSAFPID-272047",
            "CSAFPID-272932",
            "CSAFPID-273112",
            "CSAFPID-273445",
            "CSAFPID-273448",
            "CSAFPID-273509",
            "CSAFPID-273649",
            "CSAFPID-274818",
            "CSAFPID-274832",
            "CSAFPID-275538",
            "CSAFPID-276837",
            "CSAFPID-277099",
            "CSAFPID-277147",
            "CSAFPID-277148",
            "CSAFPID-277194",
            "CSAFPID-277255",
            "CSAFPID-277256",
            "CSAFPID-277321",
            "CSAFPID-277338",
            "CSAFPID-277343",
            "CSAFPID-277348",
            "CSAFPID-277357",
            "CSAFPID-277945",
            "CSAFPID-278002",
            "CSAFPID-278018",
            "CSAFPID-278019",
            "CSAFPID-278020",
            "CSAFPID-278023",
            "CSAFPID-278025",
            "CSAFPID-278504",
            "CSAFPID-278881",
            "CSAFPID-279338",
            "CSAFPID-279339",
            "CSAFPID-280463",
            "CSAFPID-280555",
            "CSAFPID-280651",
            "CSAFPID-280652",
            "CSAFPID-280770",
            "CSAFPID-280783",
            "CSAFPID-280801",
            "CSAFPID-280899",
            "CSAFPID-280937",
            "CSAFPID-280938",
            "CSAFPID-280939",
            "CSAFPID-281320",
            "CSAFPID-281331",
            "CSAFPID-281438",
            "CSAFPID-281654",
            "CSAFPID-282017",
            "CSAFPID-282028",
            "CSAFPID-282046",
            "CSAFPID-282115",
            "CSAFPID-282116",
            "CSAFPID-282117",
            "CSAFPID-283831",
            "CSAFPID-283835",
            "CSAFPID-284161",
            "CSAFPID-284178",
            "CSAFPID-284179",
            "CSAFPID-284331",
            "CSAFPID-284740",
            "CSAFPID-285325",
            "CSAFPID-285326",
            "CSAFPID-285327",
            "CSAFPID-285328",
            "CSAFPID-285329",
            "CSAFPID-286031",
            "CSAFPID-286409",
            "CSAFPID-286410",
            "CSAFPID-286477",
            "CSAFPID-286486",
            "CSAFPID-286498",
            "CSAFPID-286534",
            "CSAFPID-286544",
            "CSAFPID-286594",
            "CSAFPID-286799",
            "CSAFPID-286801",
            "CSAFPID-286802",
            "CSAFPID-287087",
            "CSAFPID-287125",
            "CSAFPID-288221",
            "CSAFPID-288247",
            "CSAFPID-289372",
            "CSAFPID-290562",
            "CSAFPID-290565",
            "CSAFPID-290580",
            "CSAFPID-290596",
            "CSAFPID-290660",
            "CSAFPID-290669",
            "CSAFPID-290671",
            "CSAFPID-290673",
            "CSAFPID-290674",
            "CSAFPID-290675",
            "CSAFPID-292650",
            "CSAFPID-292656",
            "CSAFPID-292698",
            "CSAFPID-292876",
            "CSAFPID-294838",
            "CSAFPID-295198",
            "CSAFPID-295359",
            "CSAFPID-295361",
            "CSAFPID-295398",
            "CSAFPID-295412",
            "CSAFPID-296763",
            "CSAFPID-299967",
            "CSAFPID-300012",
            "CSAFPID-300263",
            "CSAFPID-300823",
            "CSAFPID-300834",
            "CSAFPID-300845",
            "CSAFPID-300847",
            "CSAFPID-300848",
            "CSAFPID-300850",
            "CSAFPID-300851",
            "CSAFPID-300877",
            "CSAFPID-300935",
            "CSAFPID-300936",
            "CSAFPID-300938",
            "CSAFPID-300947",
            "CSAFPID-300948",
            "CSAFPID-301162",
            "CSAFPID-301219",
            "CSAFPID-301254",
            "CSAFPID-301278",
            "CSAFPID-301611",
            "CSAFPID-301619",
            "CSAFPID-301716",
            "CSAFPID-301722",
            "CSAFPID-301723",
            "CSAFPID-301759",
            "CSAFPID-302626",
            "CSAFPID-302628",
            "CSAFPID-302644",
            "CSAFPID-302682",
            "CSAFPID-302758",
            "CSAFPID-302782",
            "CSAFPID-302784",
            "CSAFPID-302808",
            "CSAFPID-302851",
            "CSAFPID-302891",
            "CSAFPID-302893",
            "CSAFPID-302964",
            "CSAFPID-302974",
            "CSAFPID-302979",
            "CSAFPID-303015",
            "CSAFPID-303024",
            "CSAFPID-303034",
            "CSAFPID-303042",
            "CSAFPID-303045",
            "CSAFPID-303047",
            "CSAFPID-303212",
            "CSAFPID-303213",
            "CSAFPID-303214",
            "CSAFPID-303216",
            "CSAFPID-303308",
            "CSAFPID-303311",
            "CSAFPID-303316",
            "CSAFPID-303324",
            "CSAFPID-303361",
            "CSAFPID-303470",
            "CSAFPID-303471",
            "CSAFPID-304035",
            "CSAFPID-304070",
            "CSAFPID-304866",
            "CSAFPID-305238",
            "CSAFPID-305275",
            "CSAFPID-305276",
            "CSAFPID-305277",
            "CSAFPID-306388",
            "CSAFPID-306389",
            "CSAFPID-306557",
            "CSAFPID-306558",
            "CSAFPID-306610",
            "CSAFPID-306611",
            "CSAFPID-306648",
            "CSAFPID-306804",
            "CSAFPID-306814",
            "CSAFPID-306815",
            "CSAFPID-306849",
            "CSAFPID-306850",
            "CSAFPID-306891",
            "CSAFPID-306957"
          ]
        }
      ],
      "title": "Cisco IOx Application Hosting Environment Carriage Return Line Feed (CRLF) Injection Vulnerability"
    }
  ]
}

GHSA-C9Q8-FG52-4CRV

Vulnerability from github – Published: 2026-03-25 18:31 – Updated: 2026-03-25 18:31

Details

This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.

Severity ?

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20113"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-93"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T16:16:15Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user.\n\n This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events.",
  "id": "GHSA-c9q8-fg52-4crv",
  "modified": "2026-03-25T18:31:47Z",
  "published": "2026-03-25T18:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20113"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

FKIE_CVE-2026-20113

Vulnerability from fkie_nvd - Published: 2026-03-25 16:16 - Updated: 2026-03-26 15:13

Severity ?

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user.\r\n\r This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events."
    }
  ],
  "id": "CVE-2026-20113",
  "lastModified": "2026-03-26T15:13:15.790",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-25T16:16:15.637",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-20113 (GCVE-0-2026-20113)

CISCO-SA-IOX-CRLF-NVGKTKJZ

GHSA-C9Q8-FG52-4CRV

FKIE_CVE-2026-20113

Tags

Sightings

Nomenclature