🔐 CVE Alert

CVE-2026-57187

UNKNOWN 0.0

Asterisk: Heap-use-after-free in Asterisk PJSIP TCP/SDP handling when TCP connection closes during SDP processing

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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, an authenticated attacker may cause a heap-use-after-free in `PJSIP TCP/SDP` handling by sending a `SIP INVITE` over a connection-oriented transport and disconnecting before Asterisk responds with the `200 OK`. So far, the crash has only been reproduced when Asterisk is built with `Address Sanitizer`, which detects the issue. `Address Sanitizer` is a development tool with significant performance overhead and, according to the maintainer, is not used in production systems. 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.

CWE CWE-416 CWE-664
Vendor asterisk
Product asterisk
Published Oct 26, 2026
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Affected Versions

asterisk / asterisk
< 20.20.1 >= 21.0.0-pre1, < 21.12.3 >= 22.0.0-pre1, < 22.10.1 >= 23.0.0-pre1, < 23.4.1
asterisk / certified-asterisk
< 20.7-cert11 >= 22.8-cert1-pre1, < 22.8-cert3

References

NVD ↗ CVE.org ↗ EPSS Data ↗
github.com: https://github.com/asterisk/asterisk/security/advisories/GHSA-g8q2-p36q-94f6 github.com: https://github.com/asterisk/asterisk/commit/0f076168e0be31ebee37762192d0ee049e9c0d42 github.com: https://github.com/asterisk/asterisk/commit/27b9544b32f059a4f614169243eaa7559f622aa0 github.com: https://github.com/asterisk/asterisk/commit/6e1f4df744369d66ea6f412e355d819b2a7bf26c github.com: https://github.com/asterisk/asterisk/commit/9e0386c6d259f0c7499d52499d9891bee8a494fa github.com: https://github.com/asterisk/asterisk/commit/b7ba85458796ef54b471017287c7806095dbda76 github.com: https://github.com/asterisk/asterisk/commit/d4e30005940f86942745bcc64f34748d69870247 github.com: https://github.com/asterisk/asterisk/commit/f1e47621472bb3d8ad71f32823f5ca986e008437 github.com: https://github.com/asterisk/asterisk/releases/tag/20.20.1 github.com: https://github.com/asterisk/asterisk/releases/tag/21.12.3 github.com: https://github.com/asterisk/asterisk/releases/tag/22.10.1 github.com: https://github.com/asterisk/asterisk/releases/tag/23.4.1 github.com: https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 github.com: https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 github.com: https://github.com/asterisk/asterisk/tree/24.0.0-pre1