CVE-2026-23740

highpriority · track · 31EPSS 0.001 · 3 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.13% (3rd) EPSS

CVSS 7.8 · high

Is it mine?

25 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · none–high · 0–7.8

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.10noneCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:Nsecondary · security-advisories@github.comexploitability 1.8 · impact 0

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-427US

affected products (25)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source Asterisk <20.18.2all versionscert_bundDE
Open Source Asterisk <20.7-cert9all versionscert_bundDE
Open Source Asterisk <21.12.1all versionscert_bundDE
Open Source Asterisk <22.8.2all versionscert_bundDE
Open Source Asterisk <23.2.2all versionscert_bundDE
Open Source Asterisk< 20.18.2cert_bundDE
Open Source Asterisk< 20.7-cert9cert_bundDE
Open Source Asterisk< 21.12.1cert_bundDE
Open Source Asterisk< 22.8.2cert_bundDE
Open Source Asterisk< 23.2.2cert_bundDE
asterisk asterisk≤ < 20.7-cert9enisa_euvdEU
asterisk asterisk≤ < 22.8.2enisa_euvdEU
asterisk asterisk≤ < 21.12.1enisa_euvdEU
asterisk asterisk≤ < 20.18.2enisa_euvdEU
asterisk asterisk≤ < 23.2.2enisa_euvdEU
sangoma asterisk< 20.18.2nvdUScpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
sangoma asterisk21.0.0 → 21.12.1nvdUScpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
sangoma asterisk22.0.0 → 22.8.2nvdUScpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
sangoma asterisk23.0.0 → 23.2.2nvdUScpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0327Asterisk: Mehrere SchwachstellenDeutsch2026-02-05csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Asterisk ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, beliebigen Code mit Root-Rechten auszuführen, erweiterte Privilegien zu erlangen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-02-06modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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