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None severity0.0NVD Advisory· Published Feb 6, 2026· Updated Jun 17, 2026

CVE-2026-23740

CVE-2026-23740

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

69
  • Freepbx/Asterisk
    cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
    Range: <20.18.2
  • Freepbx/Certified Asterisk66 versions
    cpe:2.3:a:sangoma:certified_asterisk:13.13.0:-:*:*:*:*:*:*+ 65 more
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:-:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:-:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert1-rc5:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert10:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert11:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert12:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert13:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert14:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:-:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert10:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert11:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert12:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert13:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert14:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert15:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert16:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert6:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert7:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:18.9:cert9:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert2:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert3:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert4:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert5:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert6:*:*:*:*:*:*
    • cpe:2.3:a:sangoma:certified_asterisk:20.7:cert7:*:*:*:*:*:*
  • Asterisk/Asteriskllm-fuzzy2 versions
    before 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2+ 1 more
    • (no CPE)range: before 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2
    • (no CPE)range: < 23.2.2

Patches

Vulnerability mechanics

References

1

News mentions

0

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