Vulnerability 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, `app_sms.c` copies externally controlled `SMS` lengths into `fixed in-struct buffers` without sufficient bounds checks, allowing an attacker to corrupt memory or crash Asterisk. The administrator must explicitly use the `SMS` dialplan application, which is useful when routing calls to or from `analog devices`, and must not have ensured that data passed to the application is valid. 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.
Related Weaknesses (CWE)
References
- https://github.com/asterisk/asterisk/commit/15c66022dc441ec63d7bd5f53cf7f35db729
- https://github.com/asterisk/asterisk/commit/38a2059eb77a91a6b6e76eeba5875c2b9602
- https://github.com/asterisk/asterisk/commit/59b74276f24ba104d859f3f05897c9b8d835
- https://github.com/asterisk/asterisk/commit/60f4ef3deac6b9af30519b46c13f10326403
- https://github.com/asterisk/asterisk/commit/661d6a2fc5cc7744ab9d849ed3c73ae50663
- https://github.com/asterisk/asterisk/commit/7048a3841df99e090b9d8724660037358162
- https://github.com/asterisk/asterisk/commit/f46f63bd4d33665d336cf8b5998650b91522
- https://github.com/asterisk/asterisk/releases/tag/20.20.1
- https://github.com/asterisk/asterisk/releases/tag/21.12.3
- https://github.com/asterisk/asterisk/releases/tag/22.10.1
- https://github.com/asterisk/asterisk/releases/tag/23.4.1
- https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
- https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
- https://github.com/asterisk/asterisk/security/advisories/GHSA-q9fr-m7g8-6ph5
- https://github.com/asterisk/asterisk/tree/24.0.0-pre1
FAQ
What is CVE-2026-57199?
CVE-2026-57199 is a documented vulnerability. 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, `app_sms.c` copies externa...
How severe is CVE-2026-57199?
CVSS scoring is not yet available for CVE-2026-57199. Check NVD for updates.
Is there a patch for CVE-2026-57199?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.