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CVE-2026-57201 Asterisk: Stack Buffer Overflow in H.323 ooTrace() via Unbounded vsprintf into Fixed 2048-byte Buffer

🗓️ 27 Oct 2026 16:56:37Reported by GoogleType 
osv_cve
 osv_cve🔗 osv.dev👁 3 Views

Remote stack buffer overflow in Asterisk H.323 ooTrace() causes process crash.

Refs
SourceLink
githubwww.github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57201.json
githubwww.github.com/asterisk/asterisk/commit/2d7b8c8dc13d9ead8b6f36cc38b6dd91cd4abd3a
githubwww.github.com/asterisk/asterisk/commit/33f62e351642edd9c58ef97b0002132722546af9
githubwww.github.com/asterisk/asterisk/commit/875ac7413de0b7068cd12d0da2f140cd06ba9357
githubwww.github.com/asterisk/asterisk/commit/ac0a64dec6d4231bf005a68da6af3e02bb311634
githubwww.github.com/asterisk/asterisk/commit/bf0c9a906892bc0f91fa753476e326919e4e30e5
githubwww.github.com/asterisk/asterisk/commit/c4d9b4defe83f74523880fd630c02c49683786a3
githubwww.github.com/asterisk/asterisk/commit/fff256d0539e96f70ac315844d72e9d540f03a4c
githubwww.github.com/asterisk/asterisk/releases/tag/20.20.1
githubwww.github.com/asterisk/asterisk/releases/tag/21.12.3
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28 Oct 2026 10:57Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.17.5
AsteriskH.323stack buffer overflowooTrace()vsprintfchan_ooh323
3