Which versions of Asterisk are affected by CVE-2025-47780?

Organizations using Asterisk should be aware of moderate risk from CVE-2025-47780, a OS command injection vulnerability rated CVSS 4.8.

Is there a public PoC exploit available for CVE-2025-47780?

Yes, a public proof-of-concept exploit is available for CVE-2025-47780. Prioritise patching immediately. EPSS: 0.6%.

How to fix or mitigate CVE-2025-47780?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Validate input sanitization for user-controlled parameters.

Asterisk CVE-2025-47780

Q: What is the CVSS score of CVE-2025-47780?

CVE-2025-47780 has a CVSS 4.0 base score of 4.8 (Medium). CVSS vector: CVSS: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 probability: 0.6%.

MEDIUM

OS Command Injection (CWE-78)

2025-05-22 security-advisories@github.com

Microsoft Command Injection Asterisk Certified Asterisk

4.8

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.8 MEDIUM

CVSS: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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:43 vuln.today

PoC Detected

Nov 03, 2025 - 20:19 vuln.today

Public exploit code

CVE Published

May 22, 2025 - 17:15 nvd

MEDIUM 4.8

DescriptionGitHub Advisory

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.

AnalysisAI

Asterisk is an open-source private branch exchange (PBX). Rated medium severity (CVSS 4.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. 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. Affected products include: Sangoma Asterisk, Sangoma Certified Asterisk.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.