{"id":"CVE-2026-76447","state":"PUBLISHED","title":"Cisco Identity Services Engine Certificate Reload Vulnerability","description":"A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material.\r\n\r\nThis vulnerability is due to missing authentication on a function of the OCSP responder. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to cause the OCSP responder to reload certificate and key material on demand.","publishedAt":"2026-09-16T20:24:42.536Z","updatedAt":"2026-09-17T14:03:00.497Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Identity Services Engine Software","Cisco Cisco ISE Passive Identity Connector"],"affected":[{"vendor":"Cisco","product":"Cisco Identity Services Engine Software","defaultStatus":"unknown","versions":[{"version":"3.1.0","status":"affected"},{"version":"3.1.0 p1","status":"affected"},{"version":"3.1.0 p3","status":"affected"},{"version":"3.1.0 p2","status":"affected"},{"version":"3.2.0","status":"affected"},{"version":"3.1.0 p4","status":"affected"},{"version":"3.1.0 p5","status":"affected"},{"version":"3.2.0 p1","status":"affected"},{"version":"3.1.0 p6","status":"affected"},{"version":"3.2.0 p2","status":"affected"},{"version":"3.1.0 p7","status":"affected"},{"version":"3.3.0","status":"affected"},{"version":"3.2.0 p3","status":"affected"},{"version":"3.2.0 p4","status":"affected"},{"version":"3.1.0 p8","status":"affected"},{"version":"3.2.0 p5","status":"affected"},{"version":"3.2.0 p6","status":"affected"},{"version":"3.1.0 p9","status":"affected"},{"version":"3.3 Patch 2","status":"affected"},{"version":"3.3 Patch 1","status":"affected"},{"version":"3.3 Patch 3","status":"affected"},{"version":"3.4.0","status":"affected"},{"version":"3.2.0 p7","status":"affected"},{"version":"3.3 Patch 4","status":"affected"},{"version":"3.4 Patch 1","status":"affected"},{"version":"3.1.0 p10","status":"affected"},{"version":"3.3 Patch 5","status":"affected"},{"version":"3.3 Patch 6","status":"affected"},{"version":"3.4 Patch 2","status":"affected"},{"version":"3.3 Patch 7","status":"affected"},{"version":"3.4 Patch 3","status":"affected"},{"version":"3.5.0","status":"affected"},{"version":"3.4 Patch 4","status":"affected"},{"version":"3.3 Patch 8","status":"affected"},{"version":"3.2 Patch 8","status":"affected"},{"version":"3.5 Patch 1","status":"affected"},{"version":"3.3 Patch 9","status":"affected"},{"version":"3.2 Patch 9","status":"affected"},{"version":"3.4 Patch 5","status":"affected"},{"version":"3.5 Patch 3","status":"affected"},{"version":"3.5 Patch 2","status":"affected"},{"version":"3.3 Patch 10","status":"affected"},{"version":"3.3 Patch 11","status":"affected"},{"version":"3.4 Patch 6","status":"affected"},{"version":"3.2 Patch 10","status":"affected"},{"version":"3.1.0 p72","status":"affected"},{"version":"3.1.0 p11","status":"affected"}]},{"vendor":"Cisco","product":"Cisco ISE Passive Identity Connector","defaultStatus":"unknown","versions":[{"version":"3.2.0","status":"affected"},{"version":"3.1.0","status":"affected"},{"version":"3.3.0","status":"affected"},{"version":"3.4.0","status":"affected"},{"version":"3.5.0","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiauth-bypass-sgD2HbL4"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/76xxx/CVE-2026-76447.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-76447","state":"PUBLISHED","datePublished":"2026-09-16T20:24:42.536Z","dateUpdated":"2026-09-17T14:03:00.497Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2026-08-19T12:02:03.636Z"},"containers":{"cna":{"title":"Cisco Identity Services Engine Certificate Reload Vulnerability","descriptions":[{"lang":"en","value":"A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material.\r\n\r\nThis vulnerability is due to missing authentication on a function of the OCSP responder. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to cause the OCSP responder to reload certificate and key material on demand."}],"affected":[{"vendor":"Cisco","product":"Cisco Identity Services Engine Software","defaultStatus":"unknown","versions":[{"version":"3.1.0","status":"affected"},{"version":"3.1.0 p1","status":"affected"},{"version":"3.1.0 p3","status":"affected"},{"version":"3.1.0 p2","status":"affected"},{"version":"3.2.0","status":"affected"},{"version":"3.1.0 p4","status":"affected"},{"version":"3.1.0 p5","status":"affected"},{"version":"3.2.0 p1","status":"affected"},{"version":"3.1.0 p6","status":"affected"},{"version":"3.2.0 p2","status":"affected"},{"version":"3.1.0 p7","status":"affected"},{"version":"3.3.0","status":"affected"},{"version":"3.2.0 p3","status":"affected"},{"version":"3.2.0 p4","status":"affected"},{"version":"3.1.0 p8","status":"affected"},{"version":"3.2.0 p5","status":"affected"},{"version":"3.2.0 p6","status":"affected"},{"version":"3.1.0 p9","status":"affected"},{"version":"3.3 Patch 2","status":"affected"},{"version":"3.3 Patch 1","status":"affected"},{"version":"3.3 Patch 3","status":"affected"},{"version":"3.4.0","status":"affected"},{"version":"3.2.0 p7","status":"affected"},{"version":"3.3 Patch 4","status":"affected"},{"version":"3.4 Patch 1","status":"affected"},{"version":"3.1.0 p10","status":"affected"},{"version":"3.3 Patch 5","status":"affected"},{"version":"3.3 Patch 6","status":"affected"},{"version":"3.4 Patch 2","status":"affected"},{"version":"3.3 Patch 7","status":"affected"},{"version":"3.4 Patch 3","status":"affected"},{"version":"3.5.0","status":"affected"},{"version":"3.4 Patch 4","status":"affected"},{"version":"3.3 Patch 8","status":"affected"},{"version":"3.2 Patch 8","status":"affected"},{"version":"3.5 Patch 1","status":"affected"},{"version":"3.3 Patch 9","status":"affected"},{"version":"3.2 Patch 9","status":"affected"},{"version":"3.4 Patch 5","status":"affected"},{"version":"3.5 Patch 3","status":"affected"},{"version":"3.5 Patch 2","status":"affected"},{"version":"3.3 Patch 10","status":"affected"},{"version":"3.3 Patch 11","status":"affected"},{"version":"3.4 Patch 6","status":"affected"},{"version":"3.2 Patch 10","status":"affected"},{"version":"3.1.0 p72","status":"affected"},{"version":"3.1.0 p11","status":"affected"}]},{"vendor":"Cisco","product":"Cisco ISE Passive Identity Connector","defaultStatus":"unknown","versions":[{"version":"3.2.0","status":"affected"},{"version":"3.1.0","status":"affected"},{"version":"3.3.0","status":"affected"},{"version":"3.4.0","status":"affected"},{"version":"3.5.0","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiauth-bypass-sgD2HbL4","name":"cisco-sa-ise-multiauth-bypass-sgD2HbL4"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"Missing Authentication for Critical Function","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2026-09-16T20:24:42.536Z"},"exploits":[{"lang":"en","value":"The Cisco PSIRT is aware that a public announcement is available for the vulnerabilities that are described in this advisory.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory."}],"source":{"advisory":"cisco-sa-ise-multiauth-bypass-sgD2HbL4","discovery":"EXTERNAL","defects":["CSCwu73832"]}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T14:02:25.606583Z","id":"CVE-2026-76447","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-17T14:03:00.497Z"}}]}}}