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Vulnerability details: VCID-1qxc-4xk5-2feu
Vulnerability ID VCID-1qxc-4xk5-2feu
Aliases CVE-2026-23740
Summary Asterisk: Asterisk: Arbitrary code execution and file overwrite as root via insecure ast_coredumper file handling
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-379 Creation of Temporary File in Directory with Insecure Permissions
CWE-427 Uncontrolled Search Path Element
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23740.json
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-23740
cvssv3.1 0 https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
cvssv3.1 7.8 https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
ssvc Track https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23740.json
https://api.first.org/data/v1/epss?cve=CVE-2026-23740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23740
1127438 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1127438
2437723 https://bugzilla.redhat.com/show_bug.cgi?id=2437723
GHSA-xpc6-x892-v83c https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23740.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N Found at https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-06T19:11:52Z/ Found at https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c
Exploit Prediction Scoring System (EPSS)
Percentile 0.025
EPSS Score 0.00014
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:31:33.110152+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23740.json 38.0.0