CVE-2026-20128 (GCVE-0-2026-20128)

Vulnerability from cvelistv5 – Published: 2026-02-25 16:14 – Updated: 2026-02-25 19:05
VLAI?
Title
Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability
Summary
A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker to gain DCA user privileges on an affected system. To exploit this vulnerability, the attacker must have valid vmanage credentials on the affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by accessing the filesystem as a low-privileged user and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
CWE
  • CWE-257 - Storing Passwords in a Recoverable Format
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Catalyst SD-WAN Manager Affected: 20.1.12
Affected: 19.2.1
Affected: 18.4.4
Affected: 18.4.5
Affected: 20.1.1.1
Affected: 20.1.1
Affected: 19.3.0
Affected: 19.2.2
Affected: 19.2.099
Affected: 18.3.6
Affected: 18.3.7
Affected: 19.2.0
Affected: 18.3.8
Affected: 19.0.0
Affected: 19.1.0
Affected: 18.4.302
Affected: 18.4.303
Affected: 19.2.097
Affected: 19.2.098
Affected: 17.2.10
Affected: 18.3.6.1
Affected: 19.0.1a
Affected: 18.2.0
Affected: 18.4.3
Affected: 18.4.1
Affected: 17.2.8
Affected: 18.3.3.1
Affected: 18.4.0
Affected: 18.3.1
Affected: 17.2.6
Affected: 17.2.9
Affected: 18.3.4
Affected: 17.2.5
Affected: 18.3.1.1
Affected: 18.3.5
Affected: 18.4.0.1
Affected: 18.3.3
Affected: 17.2.7
Affected: 18.3.0
Affected: 19.2.3
Affected: 18.4.501_ES
Affected: 20.3.1
Affected: 20.1.2
Affected: 19.2.929
Affected: 19.2.31
Affected: 20.3.2
Affected: 19.2.32
Affected: 20.3.2.1
Affected: 20.3.2.1_927
Affected: 18.4.6
Affected: 20.3.2_928
Affected: 20.3.2_929
Affected: 20.4.1.0.1
Affected: 20.3.2.1_930
Affected: 19.2.4
Affected: 20.5.0.1.1
Affected: 20.4.1.1
Affected: 20.3.3
Affected: 19.2.4.0.1
Affected: 20.3.2_937
Affected: 20.5.1
Affected: 20.1.3
Affected: 20.3.3.0.4
Affected: 20.3.3.1.2
Affected: 20.3.3.1.1
Affected: 20.4.1.2
Affected: 20.3.3.0.2
Affected: 20.4.1.1.5
Affected: 20.4.1.0.02
Affected: 20.3.3.1.7
Affected: 20.3.3.1.5
Affected: 20.5.1.0.1
Affected: 20.3.3.1.10
Affected: 20.3.3.0.8
Affected: 20.4.2
Affected: 20.3.4
Affected: 20.3.3.0.14
Affected: 19.2.4.0.8
Affected: 19.2.4.0.9
Affected: 20.3.4.0.1
Affected: 20.3.2.0.5
Affected: 20.5.1.0.2
Affected: 20.6.1.1
Affected: 20.6.0.18.3
Affected: 20.3.2.0.6
Affected: 20.6.0.18.4
Affected: 20.4.2.0.2
Affected: 20.3.3.0.16
Affected: 20.6.1.0.1
Affected: 20.3.4.0.6
Affected: 20.7.1EFT2
Affected: 20.3.4.0.9
Affected: 20.3.4.0.11
Affected: 20.3.3.0.18
Affected: 20.6.2.1
Affected: 20.3.4.1
Affected: 20.4.2.1
Affected: 20.4.2.1.1
Affected: 20.3.4.1.1
Affected: 20.3.813
Affected: 20.3.4.0.19
Affected: 20.4.2.2.1
Affected: 20.5.1.2
Affected: 20.3.814
Affected: 20.4.2.2
Affected: 20.6.2.2
Affected: 20.3.4.2.1
Affected: 20.3.4.1.2
Affected: 20.3.4.0.20
Affected: 20.6.2.2.3
Affected: 20.4.2.2.2
Affected: 20.6.2.0.4
Affected: 20.3.4.0.24
Affected: 20.6.2.2.7
Affected: 20.3.4.2.2
Affected: 20.4.2.2.4
Affected: 20.3.5.0.8
Affected: 20.3.5.0.9
Affected: 20.3.5.0.7
Affected: 20.6.3.0.2
Affected: 20.9.1EFT2
Affected: 20.3.6
Affected: 20.3.7
Affected: 20.4.2.3
Affected: 20.3.5.1
Affected: 20.3.4.3
Affected: 20.3.3.2
Affected: 20.3.7.1
Affected: 20.3.4.0.25
Affected: 20.6.2.2.4
Affected: 20.6.1.2
Affected: 20.1.3.1
Affected: 20.6.5.1.4
Affected: 20.3.8
Affected: 20.12.501
Affected: 26.1.1
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              "status": "affected",
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            {
              "status": "affected",
              "version": "18.3.3"
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            {
              "status": "affected",
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            {
              "status": "affected",
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            },
            {
              "status": "affected",
              "version": "19.2.3"
            },
            {
              "status": "affected",
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              "version": "20.3.6"
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              "version": "20.3.7"
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              "version": "20.4.2.3"
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              "status": "affected",
              "version": "20.3.8"
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              "status": "affected",
              "version": "20.12.501"
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              "status": "affected",
              "version": "26.1.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker to gain DCA user privileges on an affected system. To exploit this vulnerability, the attacker must have valid\u0026nbsp;vmanage credentials on the affected system.\r\n\r\nThis vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by accessing the filesystem as a low-privileged user and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges.\r\nNote: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
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              "description": "Storing Passwords in a Recoverable Format",
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          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v"
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        "defects": [
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        "discovery": "INTERNAL"
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      "title": "Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20128\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-02-25T17:25:30.150\",\"lastModified\":\"2026-02-25T17:25:30.150\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker to gain DCA user privileges on an affected system. To exploit this vulnerability, the attacker must have valid\u0026nbsp;vmanage credentials on the affected system.\\r\\n\\r\\nThis vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by accessing the filesystem as a low-privileged user and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges.\\r\\nNote: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-257\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v\",\"source\":\"psirt@cisco.com\"}]}}"
  }
}


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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.


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Detection rules are retrieved from Rulezet.

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