CVE-2026-23740
Last modified
CVE-2026-23740 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when ast_coredumper writes its gdb init and output files to a directory that is world-writable (for example /tmp), an attacker with write permission(which is all users on a linux system) to that directory can cause root to execute arbitrary commands or overwrite arbitrary files by controlling the gdb init file and output paths. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
Description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when ast_coredumper writes its gdb init and output files to a directory that is world-writable (for example /tmp), an attacker with write permission(which is all users on a linux system) to that directory can cause root to execute arbitrary commands or overwrite arbitrary files by controlling the gdb init file and output paths. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Sangoma | Certified Asterisk | 13.13.0 | — |
| Sangoma | Certified Asterisk | 16.8 | Cert1-Rc1 |
| Sangoma | Certified Asterisk | 16.8.0 | — |
| Sangoma | Certified Asterisk | 18.9 | — |
| Sangoma | Certified Asterisk | 20.7 | Cert1 |
| Sangoma | Asterisk | < 20.18.2 | — |
| Sangoma | Asterisk | >= 21.0.0, < 21.12.1 | — |
| Sangoma | Asterisk | >= 22.0.0, < 22.8.2 | — |
| Sangoma | Asterisk | >= 23.0.0, < 23.2.2 | — |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
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