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GHSA-4JCC-JGC6-VPM7

Vulnerability from github – Published: 2026-04-01 18:36 – Updated: 2026-04-01 18:36

Details

This vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.

Severity

6.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-20042"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-01T17:28:26Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information.\n\nThis vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.",
  "id": "GHSA-4jcc-jgc6-vpm7",
  "modified": "2026-04-01T18:36:37Z",
  "published": "2026-04-01T18:36:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20042"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nd-cbid-5YqkOSHu"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-20042 (GCVE-0-2026-20042)

Vulnerability from cvelistv5 – Published: 2026-04-01 16:27 – Updated: 2026-04-02 03:56

Title

Cisco Nexus Dashboard Configuration REST API Unauthorized Access Vulnerability

Summary

A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information. This vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-01 00:00 UTC

CWE

CWE-295 - Improper Certificate Validation

Assigner

cisco mitre root Scorecard

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Nexus Dashboard	Affected: 1.1(3e) Affected: 1.1(3c) Affected: 1.1(3d) Affected: 1.1(0d) Affected: 1.1(2i) Affected: 2.0(1b) Affected: 1.1(2h) Affected: 1.1(0c) Affected: 1.1(3f) Affected: 2.1(1d) Affected: 2.1(1e) Affected: 2.0(2g) Affected: 2.0(2h) Affected: 2.1(2d) Affected: 2.0(1d) Affected: 2.2(1h) Affected: 2.2(1e) Affected: 2.2(2d) Affected: 2.1(2f) Affected: 2.3(1c) Affected: 2.3(2b) Affected: 2.3(2c) Affected: 2.3(2d) Affected: 2.3(2e) Affected: 3.0(1f) Affected: 3.0(1i) Affected: 3.1(1k) Affected: 3.1(1l) Affected: 3.2(1e) Affected: 3.2(1i) Affected: 3.3(1a) Affected: 3.3(1b) Affected: 3.3(2b) Affected: 4.0(1i) Affected: 3.3(2g) Affected: 3.2(2f) Affected: 3.2(2g) Affected: 3.2(2m) Affected: 3.1(1n) Affected: 4.1(1g)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20042",
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                  },
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              "status": "affected",
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        }
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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.

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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.

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GHSA-4JCC-JGC6-VPM7

CVE-2026-20042 (GCVE-0-2026-20042)

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