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CVE-2025-47780

cli_permissions.conf: deny option does not work for disallowing shell commands

Medium4.8EPSS 0.28%
Published
Updated
Reserved
Assigned by
GitHub_M

Description

Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, trying to disallow shell commands to be run via the Asterisk command line interface (CLI) by configuring `cli_permissions.conf` (e.g. with the config line `deny=!*`) does not work which could lead to a security risk. If an administrator running an Asterisk instance relies on the `cli_permissions.conf` file to work and expects it to deny all attempts to execute shell commands, then this could lead to a security vulnerability. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue.

Scores

CVSS scores of CVE-2025-47780, by who scored it
Scored byCVSSScoreVector
GitHub_MCNA (assigner)4.0Medium4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
NVDNVD · Modified4.0Medium4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.28% · top 80% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.

Weakness

Affected products

  • asterisk · asterisk

    • affected < 18.9-cert14
    • affected >= 18.10, < 18.26.2
    • affected >= 20.0, < 20.7-cert5
    • affected >= 20.8, < 20.14.1
    • affected >= 21.0, < 21.9.1
    • affected >= 22.0, < 22.4.1

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .