CVE-2026-57199
Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | Low2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| NVDNVD · Undergoing Analysis | 4.0 | Low2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.48% · top 58% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.3.
Weakness
Affected products
- affected < 20.20.1
- affected >= 21.0.0-pre1, < 21.12.3
- affected >= 22.0.0-pre1, < 22.10.1
- affected >= 23.0.0-pre1, < 23.4.1
- affected < 20.7-cert11
- affected >= 22.8-cert1-pre1, < 22.8-cert3
References (15)
- https://github.com/asterisk/asterisk/security/advisories/GHSA-q9fr-m7g8-6ph5 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/asterisk/asterisk/commit/15c66022dc441ec63d7bd5f53cf7f35db72964be (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/38a2059eb77a91a6b6e76eeba5875c2b96027368 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/59b74276f24ba104d859f3f05897c9b8d835a28a (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/60f4ef3deac6b9af30519b46c13f103264038b82 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/661d6a2fc5cc7744ab9d849ed3c73ae5066386df (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/7048a3841df99e090b9d87246600373581629c98 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/f46f63bd4d33665d336cf8b5998650b915222549 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/20.20.1 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/21.12.3 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/22.10.1 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/23.4.1 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 (opens in a new tab)x_refsource_MISC
- https://github.com/asterisk/asterisk/tree/24.0.0-pre1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-57199)Record last updated .