{"id":"CVE-2026-57201","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-57201","generatedAt":"2026-10-28T01:48:29.291Z","title":"Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a stack buffer overflow in the H.323 `ooTrace()` trace-logging function can occur when unbounded `vsprintf` writes into a fixed `2048-byte buffer`.","description":"Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a stack buffer overflow in the H.323 `ooTrace()` trace-logging function can occur when unbounded `vsprintf` writes into a fixed `2048-byte buffer`. A remote attacker may send a carefully crafted packet that causes the Asterisk process to crash. The `chan_ooh323` addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.","published":"2026-10-27T17:17:02.000Z","lastModified":"2026-10-27T17:17:02.000Z","status":"Received","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-787"],"affected":[],"epss":null,"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 unscored. Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-27T17:17:02.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-10-27T17:17:02.117Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://github.com/asterisk/asterisk/commit/2d7b8c8dc13d9ead8b6f36cc38b6dd91cd4abd3a","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/33f62e351642edd9c58ef97b0002132722546af9","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/875ac7413de0b7068cd12d0da2f140cd06ba9357","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/ac0a64dec6d4231bf005a68da6af3e02bb311634","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/bf0c9a906892bc0f91fa753476e326919e4e30e5","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/c4d9b4defe83f74523880fd630c02c49683786a3","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/commit/fff256d0539e96f70ac315844d72e9d540f03a4c","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-x348-j6c9-77f3","source":"security-advisories@github.com"},{"url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-57201","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."}