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CVE-2026-57201

7.5 high Awaiting Analysis
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusPublished → Awaiting AnalysisNVD modified 2026-10-28 14:18
  2. StatusReceived → PublishedNVD modified 2026-10-27 16:56
  3. StatusPublished → ReceivedNVD modified 2026-10-27 17:17
  4. First seenCVSS 7.5 · asteriskNVD modified 2026-10-27 16:56

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 15