{"id":"CVE-2026-78628","state":"PUBLISHED","title":"Improper Input Validation in the Okta Credential Provider for Windows","description":"The Okta Credential Provider for Windows does not validate a serialized credential buffer before interpreting it as a Kerberos logon structure. The buffer size and packed string offsets are not checked. Processing a malformed buffer can cause the credential provider process to terminate unexpectedly or lead to out-of-bounds memory reads and writes, which may result in the disclosure of adjacent process memory into local system logs.","publishedAt":"2026-10-13T20:07:37.375Z","updatedAt":"2026-10-14T19:27:28.784Z","severity":{"score":6,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","source":"Okta"},"assigner":"Okta","products":["Okta Okta Credential Provider for Windows"],"affected":[{"vendor":"Okta","product":"Okta Credential Provider for Windows","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.4.6.0","versionType":"semver"}]}],"references":["https://trust.okta.com/security-advisories/improper-input-validation-in-the-okta-credential-provider-for-windows-cve-2026-78628"],"weaknesses":["CWE-20","CWE-125","CWE-787"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/78xxx/CVE-2026-78628.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-78628","state":"PUBLISHED","datePublished":"2026-10-13T20:07:37.375Z","dateUpdated":"2026-10-14T19:27:28.784Z","assignerShortName":"Okta","assignerOrgId":"59b22baa-87b2-4371-8e4a-e080df12f74a","dateReserved":"2026-08-24T22:04:00.475Z"},"containers":{"cna":{"title":"Improper Input Validation in the Okta Credential Provider for Windows","descriptions":[{"lang":"en","value":"The Okta Credential Provider for Windows does not validate a serialized credential buffer before interpreting it as a Kerberos logon structure. The buffer size and packed string offsets are not checked. Processing a malformed buffer can cause the credential provider process to terminate unexpectedly or lead to out-of-bounds memory reads and writes, which may result in the disclosure of adjacent process memory into local system logs."}],"affected":[{"vendor":"Okta","product":"Okta Credential Provider for Windows","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.4.6.0","versionType":"semver"}]}],"references":[{"url":"https://trust.okta.com/security-advisories/improper-input-validation-in-the-okta-credential-provider-for-windows-cve-2026-78628"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","baseScore":6,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"Improper Input Validation"}]},{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"Out-of-bounds Read"}]},{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"Okta","orgId":"59b22baa-87b2-4371-8e4a-e080df12f74a","dateUpdated":"2026-10-13T20:17:36.454Z"},"solutions":[{"lang":"en","value":"Upgrade the Okta Credential Provider for Windows to version 1.4.6.0 or greater."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T19:27:16.578491Z","id":"CVE-2026-78628","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T19:27:28.784Z"}}]}}}