CVE-2026-23740Disclosure(sangoma / asterisk)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-427

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • asterisk
  • certified_asterisk

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
asteriskcertified_asterisk

5 versions affected across 2 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-02-06: 1Technical Details · 2026-02-06: 102-06
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2026-23740 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 writ… https://www.cve.org/CVERecord?id=CVE-2026-23740

    Post summary

    The text gives a brief disclosure of CVE‑2026‑23740 affecting older Asterisk versions, listing affected releases but providing no PoC, exploit, or mitigation information.

    00010126
    56.5K followersView on X
CPE platform detail67 entries

67 of 67 entries

PartVendorProductVersionTarget SWTarget HW
Appsangomaasterisk---
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk13.13.0--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
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Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk16.8.0--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
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Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk18.9--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--
Appsangomacertified_asterisk20.7--

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