Vulnerability-Lookup

CVE-2026-20038 (GCVE-0-2026-20038)

Vulnerability from cvelistv5 – Published: 2026-10-07 16:11 – Updated: 2026-10-07 18:05

Title

Cisco Nexus 9000 Series Fabric Switches in ACI Mode Policy-Based Redirect Endpoint Group Contract Bypass Vulnerability

Summary

A vulnerability in the endpoint group (EPG) contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts. This vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to DHCP traffic through an affected device. A successful exploit could allow the attacker to bypass EPG contracts on the affected device.

Severity

5.8 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-07 18:02 UTC

CWE

CWE-284 - Improper Access Control

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 376 records in the last 180 days details

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version	CPE status
Cisco	Cisco NX-OS System Software in ACI Mode	Affected: 15.2(1g) Affected: 15.2(2e) Affected: 15.2(2f) Affected: 15.2(2g) Affected: 15.2(2h) Affected: 15.2(3f) Affected: 15.2(3e) Affected: 15.2(3g) Affected: 15.2(4d) Affected: 15.2(4e) Affected: 15.2(5c) Affected: 15.2(5d) Affected: 16.0(1g) Affected: 15.2(5e) Affected: 15.2(4f) Affected: 15.2(6e) Affected: 15.2(6h) Affected: 16.0(1j) Affected: 15.2(6g) Affected: 15.2(7f) Affected: 15.2(7g) Affected: 16.0(2h) Affected: 15.2(8d) Affected: 16.0(2j) Affected: 15.2(8e) Affected: 16.0(3d) Affected: 16.0(3e) Affected: 15.2(8f) Affected: 15.2(8g) Affected: 15.3(1d) Affected: 15.2(8h) Affected: 16.0(4c) Affected: 15.3(2a) Affected: 15.2(8i) Affected: 16.0(5h) Affected: 15.3(2b) Affected: 16.0(3g) Affected: 16.0(5j) Affected: 15.3(2c) Affected: 16.0(6c) Affected: 15.3(2d) Affected: 16.1(1f) Affected: 16.0(7e) Affected: 16.0(8e) Affected: 15.3(2e) Affected: 16.0(8f) Affected: 16.1(2f) Affected: 16.1(2g) Affected: 15.3(2f) Affected: 16.0(9c) Affected: 16.1(3f) Affected: 16.0(9d) Affected: 16.0(6h) Affected: 16.0(8h) Affected: 16.1(3g) Affected: 16.0(9e) Affected: 16.1(4h) Affected: 16.1(5e) Affected: 16.2(1g) Affected: 16.0(9f) Affected: 16.2(2e)	guessed

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                  "version": "15.2(4f)"
                },
                {
                  "status": "affected",
                  "version": "15.2(6e)"
                },
                {
                  "status": "affected",
                  "version": "15.2(6h)"
                },
                {
                  "status": "affected",
                  "version": "16.0(1j)"
                },
                {
                  "status": "affected",
                  "version": "15.2(6g)"
                },
                {
                  "status": "affected",
                  "version": "15.2(7f)"
                },
                {
                  "status": "affected",
                  "version": "15.2(7g)"
                },
                {
                  "status": "affected",
                  "version": "16.0(2h)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8d)"
                },
                {
                  "status": "affected",
                  "version": "16.0(2j)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8e)"
                },
                {
                  "status": "affected",
                  "version": "16.0(3d)"
                },
                {
                  "status": "affected",
                  "version": "16.0(3e)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8f)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8g)"
                },
                {
                  "status": "affected",
                  "version": "15.3(1d)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8h)"
                },
                {
                  "status": "affected",
                  "version": "16.0(4c)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2a)"
                },
                {
                  "status": "affected",
                  "version": "15.2(8i)"
                },
                {
                  "status": "affected",
                  "version": "16.0(5h)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2b)"
                },
                {
                  "status": "affected",
                  "version": "16.0(3g)"
                },
                {
                  "status": "affected",
                  "version": "16.0(5j)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2c)"
                },
                {
                  "status": "affected",
                  "version": "16.0(6c)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2d)"
                },
                {
                  "status": "affected",
                  "version": "16.1(1f)"
                },
                {
                  "status": "affected",
                  "version": "16.0(7e)"
                },
                {
                  "status": "affected",
                  "version": "16.0(8e)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2e)"
                },
                {
                  "status": "affected",
                  "version": "16.0(8f)"
                },
                {
                  "status": "affected",
                  "version": "16.1(2f)"
                },
                {
                  "status": "affected",
                  "version": "16.1(2g)"
                },
                {
                  "status": "affected",
                  "version": "15.3(2f)"
                },
                {
                  "status": "affected",
                  "version": "16.0(9c)"
                },
                {
                  "status": "affected",
                  "version": "16.1(3f)"
                },
                {
                  "status": "affected",
                  "version": "16.0(9d)"
                },
                {
                  "status": "affected",
                  "version": "16.0(6h)"
                },
                {
                  "status": "affected",
                  "version": "16.0(8h)"
                },
                {
                  "status": "affected",
                  "version": "16.1(3g)"
                },
                {
                  "status": "affected",
                  "version": "16.0(9e)"
                },
                {
                  "status": "affected",
                  "version": "16.1(4h)"
                },
                {
                  "status": "affected",
                  "version": "16.1(5e)"
                },
                {
                  "status": "affected",
                  "version": "16.2(1g)"
                },
                {
                  "status": "affected",
                  "version": "16.0(9f)"
                },
                {
                  "status": "affected",
                  "version": "16.2(2e)"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability in the endpoint group (EPG) contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts.\r\n\r\nThis vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to\u0026nbsp;DHCP traffic through an affected device. A successful exploit could allow the attacker to bypass EPG contracts on the affected device."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
                "version": "3.1"
              },
              "format": "cvssV3_1"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-284",
                  "description": "Improper Access Control",
                  "lang": "en",
                  "type": "cwe"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-07T16:11:55.078Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "name": "cisco-sa-aci-epgcbp-SfDU7NLf",
              "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf"
            }
          ],
          "source": {
            "advisory": "cisco-sa-aci-epgcbp-SfDU7NLf",
            "defects": [
              "CSCwr18270"
            ],
            "discovery": "EXTERNAL"
          },
          "title": "Cisco Nexus 9000 Series Fabric Switches in ACI Mode Policy-Based Redirect Endpoint Group Contract Bypass Vulnerability"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2026-20038",
        "datePublished": "2026-10-07T16:11:55.078Z",
        "dateReserved": "2025-10-08T11:59:15.354Z",
        "dateUpdated": "2026-10-07T18:05:53.253Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

BDU:2026-16202 (CVE-2026-20038)

Vulnerability from fstec – Published: 2026-10-12 – Updated: 2026-10-12 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции Endpoint Group (EPG) Contract операционной системы Cisco NX-OS сетевых устройств Cisco Nexus 9000 Series Fabric Switches in ACI Mode, позволяющая нарушителю обойти ограничения безопасности

Summary

Уязвимость функции Endpoint Group (EPG) Contract операционной системы Cisco NX-OS сетевых устройств Cisco Nexus 9000 Series Fabric Switches in ACI Mode связана с недостатками разграничения доступа. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, обойти ограничения безопасности

Severity

5.0 (Medium) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:N/I:P/A:N

5.8 (Medium) CVSS 3.1


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

Class

Architecture vulnerability

Status

Confirmed by the vendor

Exploitation

Authorization bypass

Incidents

Being clarified

Remediation

Software update

CWE

CWE-284 - Неправильный контроль доступа

Aliases

CVE-2026-20038

References

1 reference

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

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

NX-OS

Versions

15.2 (NX-OS), 15.2(1g) (NX-OS), 15.2(2e) (NX-OS), 15.2(2f) (NX-OS), 15.2(2g) (NX-OS), 15.2(2h) (NX-OS), 15.2(3e) (NX-OS), 15.2(3f) (NX-OS), 15.2(3g) (NX-OS), 15.2(4d) (NX-OS), 15.2(4e) (NX-OS), 15.2(5c) (NX-OS), 15.2(5d) (NX-OS), 15.2(5e) (NX-OS), 15.2(4f) (NX-OS), 16.0(1g) (NX-OS), 16.0(1j) (NX-OS), 15.2(6e) (NX-OS), 15.2(6g) (NX-OS), 15.2(7f) (NX-OS), 15.2(7g) (NX-OS), 15.2(6h) (NX-OS), 15.2(8d) (NX-OS), 15.2(8e) (NX-OS), 15.2(8f) (NX-OS), 15.2(8g) (NX-OS), 15.2(8h) (NX-OS), 15.2(8i) (NX-OS), 16.0 (NX-OS), 16.0(2h) (NX-OS), 16.0(2j) (NX-OS), 16.0(3d) (NX-OS), 16.0(3e) (NX-OS), 16.0(4c) (NX-OS), 16.0(5h) (NX-OS), 16.0(3g) (NX-OS), 16.0(5j) (NX-OS), 16.0(6c) (NX-OS), 16.0(7e) (NX-OS), 16.0(8e) (NX-OS), 16.0(8f) (NX-OS), 16.0(9c) (NX-OS), 16.0(9d) (NX-OS), 16.0(6h) (NX-OS), 16.0(8h) (NX-OS), 16.0(9e) (NX-OS), 16.0(9f) (NX-OS), 15.3 (NX-OS), 15.3(1d) (NX-OS), 15.3(2a) (NX-OS), 15.3(2b) (NX-OS), 15.3(2c) (NX-OS), 15.3(2d) (NX-OS), 15.3(2e) (NX-OS), 15.3(2f) (NX-OS), 16.1 (NX-OS), 16.1(1f) (NX-OS), 16.1(2f) (NX-OS), 16.1(2g) (NX-OS), 16.1(3f) (NX-OS), 16.1(3g) (NX-OS), 16.1(4h) (NX-OS), 16.1(5e) (NX-OS), 16.2 (NX-OS), 16.2(1g) (NX-OS), 16.2(2e) (NX-OS)

Product types

Operating system

Platforms

Cisco Systems, Inc. NX-OS 15.2 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(2g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(2h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(3e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(3f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(4d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(4e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(5c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(5d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(5e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(4f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(1j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(6e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(6g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(7f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(7g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(6h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.2(8i) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(2h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(2j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(3d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(3e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(4c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(5h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(5j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(6c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(7e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(8e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(8f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(9c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(9d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(6h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(8h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(9e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.0(9f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(1d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2a) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2b) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 15.3(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(1f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(2g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(3f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(4h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.1(5e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.2 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.2(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Inc. NX-OS 16.2(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode

Mitigations

Использование рекомендаций: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf

JSON

To clipboard

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  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
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  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "NX-OS",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Cisco Systems, Inc. NX-OS 15.2 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(2g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(2h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(3e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(3f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(4d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(4e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(5c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(5d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(5e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(4f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(1j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(6e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(6g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(7f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(7g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(6h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.2(8i) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(2h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(2j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(3d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(3e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(4c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(5h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(5j) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(6c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(7e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(8e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(8f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(9c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(9d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(6h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(8h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(9e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.0(9f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(1d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2a) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2b) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2c) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2d) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 15.3(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(1f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(2f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(2g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(3f) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(3g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(4h) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.1(5e) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.2 Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.2(1g) Cisco Nexus 9000 Series Fabric Switches in ACI mode, Cisco Systems, Inc. NX-OS 16.2(2e) Cisco Nexus 9000 Series Fabric Switches in ACI mode",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 Endpoint Group (EPG) Contract \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco NX-OS \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 Cisco Nexus 9000 Series Fabric Switches in ACI Mode, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u0431\u043e\u0439\u0442\u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u0434\u043e\u0441\u0442\u0443\u043f\u0430 (CWE-284)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 Endpoint Group (EPG) Contract \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco NX-OS \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 Cisco Nexus 9000 Series Fabric Switches in ACI Mode \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u0440\u0430\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u043e\u0431\u043e\u0439\u0442\u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-284",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,8)"
}

CISCO-SA-ACI-EPGCBP-SFDU7NLF

Vulnerability from csaf_cisco - Published: 2026-10-07 16:00 - Updated: 2026-10-07 16:00

Summary

Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability

Scope

1 vulnerability in this advisory, including CVE-2026-20038.

CVE-2026-20038

5.8 (Medium)


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

Known affected: 61 products

https://software.cisco.com

Open the full advisory

FKIE_CVE-2026-20038

Vulnerability from fkie_nvd - Published: 2026-10-07 17:16 - Updated: 2026-10-08 20:08

Severity

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

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco NX-OS System Software in ACI Mode",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "15.2(1g)"
            },
            {
              "status": "affected",
              "version": "15.2(2e)"
            },
            {
              "status": "affected",
              "version": "15.2(2f)"
            },
            {
              "status": "affected",
              "version": "15.2(2g)"
            },
            {
              "status": "affected",
              "version": "15.2(2h)"
            },
            {
              "status": "affected",
              "version": "15.2(3f)"
            },
            {
              "status": "affected",
              "version": "15.2(3e)"
            },
            {
              "status": "affected",
              "version": "15.2(3g)"
            },
            {
              "status": "affected",
              "version": "15.2(4d)"
            },
            {
              "status": "affected",
              "version": "15.2(4e)"
            },
            {
              "status": "affected",
              "version": "15.2(5c)"
            },
            {
              "status": "affected",
              "version": "15.2(5d)"
            },
            {
              "status": "affected",
              "version": "16.0(1g)"
            },
            {
              "status": "affected",
              "version": "15.2(5e)"
            },
            {
              "status": "affected",
              "version": "15.2(4f)"
            },
            {
              "status": "affected",
              "version": "15.2(6e)"
            },
            {
              "status": "affected",
              "version": "15.2(6h)"
            },
            {
              "status": "affected",
              "version": "16.0(1j)"
            },
            {
              "status": "affected",
              "version": "15.2(6g)"
            },
            {
              "status": "affected",
              "version": "15.2(7f)"
            },
            {
              "status": "affected",
              "version": "15.2(7g)"
            },
            {
              "status": "affected",
              "version": "16.0(2h)"
            },
            {
              "status": "affected",
              "version": "15.2(8d)"
            },
            {
              "status": "affected",
              "version": "16.0(2j)"
            },
            {
              "status": "affected",
              "version": "15.2(8e)"
            },
            {
              "status": "affected",
              "version": "16.0(3d)"
            },
            {
              "status": "affected",
              "version": "16.0(3e)"
            },
            {
              "status": "affected",
              "version": "15.2(8f)"
            },
            {
              "status": "affected",
              "version": "15.2(8g)"
            },
            {
              "status": "affected",
              "version": "15.3(1d)"
            },
            {
              "status": "affected",
              "version": "15.2(8h)"
            },
            {
              "status": "affected",
              "version": "16.0(4c)"
            },
            {
              "status": "affected",
              "version": "15.3(2a)"
            },
            {
              "status": "affected",
              "version": "15.2(8i)"
            },
            {
              "status": "affected",
              "version": "16.0(5h)"
            },
            {
              "status": "affected",
              "version": "15.3(2b)"
            },
            {
              "status": "affected",
              "version": "16.0(3g)"
            },
            {
              "status": "affected",
              "version": "16.0(5j)"
            },
            {
              "status": "affected",
              "version": "15.3(2c)"
            },
            {
              "status": "affected",
              "version": "16.0(6c)"
            },
            {
              "status": "affected",
              "version": "15.3(2d)"
            },
            {
              "status": "affected",
              "version": "16.1(1f)"
            },
            {
              "status": "affected",
              "version": "16.0(7e)"
            },
            {
              "status": "affected",
              "version": "16.0(8e)"
            },
            {
              "status": "affected",
              "version": "15.3(2e)"
            },
            {
              "status": "affected",
              "version": "16.0(8f)"
            },
            {
              "status": "affected",
              "version": "16.1(2f)"
            },
            {
              "status": "affected",
              "version": "16.1(2g)"
            },
            {
              "status": "affected",
              "version": "15.3(2f)"
            },
            {
              "status": "affected",
              "version": "16.0(9c)"
            },
            {
              "status": "affected",
              "version": "16.1(3f)"
            },
            {
              "status": "affected",
              "version": "16.0(9d)"
            },
            {
              "status": "affected",
              "version": "16.0(6h)"
            },
            {
              "status": "affected",
              "version": "16.0(8h)"
            },
            {
              "status": "affected",
              "version": "16.1(3g)"
            },
            {
              "status": "affected",
              "version": "16.0(9e)"
            },
            {
              "status": "affected",
              "version": "16.1(4h)"
            },
            {
              "status": "affected",
              "version": "16.1(5e)"
            },
            {
              "status": "affected",
              "version": "16.2(1g)"
            },
            {
              "status": "affected",
              "version": "16.0(9f)"
            },
            {
              "status": "affected",
              "version": "16.2(2e)"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the endpoint group (EPG) contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts.\r\n\r\nThis vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to\u0026nbsp;DHCP traffic through an affected device. A successful exploit could allow the attacker to bypass EPG contracts on the affected device."
    }
  ],
  "id": "CVE-2026-20038",
  "lastModified": "2026-10-08T20:08:45.857",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20038",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-07T18:02:43.242313Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-07T17:16:54.690",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

GHSA-8R87-MJ76-XW8H

Vulnerability from github – Published: 2026-10-07 18:32 – Updated: 2026-10-07 18:32

Details

This vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to DHCP traffic through an affected device. A successful exploit could allow the attacker to bypass EPG contracts on the affected device.

Severity

5.8 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20038"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-07T17:16:54Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the endpoint group (EPG) contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts.\n\nThis vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to\u0026nbsp;DHCP traffic through an affected device. A successful exploit could allow the attacker to bypass EPG contracts on the affected device.",
  "id": "GHSA-8r87-mj76-xw8h",
  "modified": "2026-10-07T18:32:10Z",
  "published": "2026-10-07T18:32:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20038"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-epgcbp-SfDU7NLf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-20038 (GCVE-0-2026-20038)

BDU:2026-16202 (CVE-2026-20038)

CISCO-SA-ACI-EPGCBP-SFDU7NLF

FKIE_CVE-2026-20038

GHSA-8R87-MJ76-XW8H

Tags

Sightings

Nomenclature

Related by attack behaviour