{"id":"CVE-2009-4912","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-4912","generatedAt":"2026-10-27T18:33:59.757Z","title":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) complete an SSL handshake with an HTTPS client even if this client is unauthorized, which might allow remote attackers to bypass intended access restrictions via an…","description":"Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) complete an SSL handshake with an HTTPS client even if this client is unauthorized, which might allow remote attackers to bypass intended access restrictions via an HTTPS session, aka Bug ID CSCso10876.","published":"2010-06-29T18:30:02.000Z","lastModified":"2026-06-16T23:14:36.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":10,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C"},"cwe":["CWE-264"],"affected":["cisco/asa 5580"],"epss":{"score":0.02537,"percentile":0.84843,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html","tags":["Patch"],"source":"cve@mitre.org"},{"url":"http://www.cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-4912","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}