{"id":"CVE-2026-78633","state":"PUBLISHED","title":"Denial of Service in Okta RADIUS Agent Packet Parser","description":"The Okta RADIUS Agent does not validate the sub-attribute length when parsing a Vendor-Specific attribute. A sub-attribute length of zero causes the parser to loop indefinitely, resulting in worker-thread exhaustion and denial of new RADIUS authentication requests.","publishedAt":"2026-10-13T20:08:40.528Z","updatedAt":"2026-10-16T15:31:55.280Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"Okta"},"assigner":"Okta","products":["Okta Okta RADIUS Agent"],"affected":[{"vendor":"Okta","product":"Okta RADIUS Agent","defaultStatus":"unaffected","versions":[{"version":"2.17.5","status":"affected","lessThan":"2.28.0","versionType":"semver"}]}],"references":["https://trust.okta.com/security-advisories/denial-of-service-in-okta-radius-agent-packet-parser-cve-2026-78633"],"weaknesses":["CWE-835"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/78xxx/CVE-2026-78633.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-78633","state":"PUBLISHED","datePublished":"2026-10-13T20:08:40.528Z","dateUpdated":"2026-10-16T15:31:55.280Z","assignerShortName":"Okta","assignerOrgId":"59b22baa-87b2-4371-8e4a-e080df12f74a","dateReserved":"2026-08-24T22:04:00.475Z"},"containers":{"cna":{"title":"Denial of Service in Okta RADIUS Agent Packet Parser","descriptions":[{"lang":"en","value":"The Okta RADIUS Agent does not validate the sub-attribute length when parsing a Vendor-Specific attribute. A sub-attribute length of zero causes the parser to loop indefinitely, resulting in worker-thread exhaustion and denial of new RADIUS authentication requests."}],"affected":[{"vendor":"Okta","product":"Okta RADIUS Agent","defaultStatus":"unaffected","versions":[{"version":"2.17.5","status":"affected","lessThan":"2.28.0","versionType":"semver"}]}],"references":[{"url":"https://trust.okta.com/security-advisories/denial-of-service-in-okta-radius-agent-packet-parser-cve-2026-78633"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","lang":"en","description":"Loop with Unreachable Exit Condition ('Infinite Loop')"}]}],"providerMetadata":{"shortName":"Okta","orgId":"59b22baa-87b2-4371-8e4a-e080df12f74a","dateUpdated":"2026-10-13T20:16:34.296Z"},"solutions":[{"lang":"en","value":"Upgrade the Okta RADIUS Agent to version 2.28.0 or greater."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-78633","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-16T15:26:09.166312Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T15:31:55.280Z"}}]}}}