CVE-2025-6203

Published Aug 28, 2025

Last updated 3 months ago

CVSS high 7.5

Overview

Description: A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.
Source: security@hashicorp.com
NVD status: Analyzed
Products: vault

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Weaknesses

security@hashicorp.com: CWE-770

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "C75B707B-CECA-4F3F-B7A5-3A63627E23E0",
            "versionEndExcluding": "1.16.27",
            "versionStartIncluding": "1.15.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*",
            "matchCriteriaId": "FFB5EFCB-595D-405C-AEE5-D3A674079A42",
            "versionEndExcluding": "1.21.0",
            "versionStartIncluding": "1.15.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "BB39834B-EF79-4C8B-B344-D81B15652821",
            "versionEndExcluding": "1.18.15",
            "versionStartIncluding": "1.18.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "167CFBBB-E0DF-42AB-84AA-4BF19C3873DB",
            "versionEndExcluding": "1.19.11",
            "versionStartIncluding": "1.19.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
            "matchCriteriaId": "466A7DC1-B9A3-4413-AA3E-AFAF34350E52",
            "versionEndExcluding": "1.20.5",
            "versionStartIncluding": "1.20.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References