{"id":"CVE-2025-6011","state":"PUBLISHED","title":"Timing Side-Channel in Vault’s Userpass Auth Method","description":"A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.","publishedAt":"2025-08-01T18:00:24.528Z","updatedAt":"2025-08-01T19:06:58.251Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Vault","HashiCorp Vault Enterprise"],"affected":[{"vendor":"HashiCorp","product":"Vault","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.1","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault"},{"vendor":"HashiCorp","product":"Vault Enterprise","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.1","changes":[{"at":"1.19.7","status":"unaffected"},{"at":"1.18.12","status":"unaffected"},{"at":"1.16.23","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault"}],"references":["https://discuss.hashicorp.com/t/hcsec-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034"],"weaknesses":["CWE-203"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/6xxx/CVE-2025-6011.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-6011","state":"PUBLISHED","datePublished":"2025-08-01T18:00:24.528Z","dateUpdated":"2025-08-01T19:06:58.251Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2025-06-11T18:57:02.577Z"},"containers":{"cna":{"title":"Timing Side-Channel in Vault’s Userpass Auth Method","descriptions":[{"lang":"en","value":"A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23."}],"affected":[{"vendor":"HashiCorp","product":"Vault","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.1","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault"},{"vendor":"HashiCorp","product":"Vault Enterprise","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.1","changes":[{"at":"1.19.7","status":"unaffected"},{"at":"1.18.12","status":"unaffected"},{"at":"1.16.23","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034"}],"metrics":[{"cvssV3_1":{"baseScore":3.7,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-203","description":"CWE-203: Observable Discrepancy","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2025-08-01T18:00:24.528Z"},"impacts":[{"capecId":"CAPEC-118","descriptions":[{"lang":"en","value":"CAPEC-118: Collect and Analyze Information"}]}],"source":{"advisory":"HCSEC-2025-15","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-01T19:06:39.856193Z","id":"CVE-2025-6011","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-01T19:06:58.251Z"}}]}}}