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CVE-2025-1131

Sangoma Asterisk privilege escalation

7.8 HIGHPublic exploitEPSS 0.21%
  1. Published23 Sept 2025

Description

A local privilege escalation vulnerability exists in the safe_asterisk script included with the Asterisk toolkit package. When Asterisk is started via this script (common in SysV init or FreePBX environments), it sources all .sh files located in /etc/asterisk/startup.d/ as root, without validating ownership or permissions. Non-root users with legitimate write access to /etc/asterisk can exploit this behaviour by placing malicious scripts in the startup.d directory, which will then execute with root privileges upon service restart.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Sangoma Asterisk≥ 20.0.0 < 20.15.1 · ≥ 21.0.0 < 21.10.1 · ≥ 22.0.0 < 22.5.1 · < 18.26.3
Sangoma Certified Asterisk18.9 · 20.7

Remediation

Fixed in
Sangoma Asterisk≥ 20.15.1

References

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Frequently asked

Is CVE-2025-1131 being actively exploited?

CVE-2025-1131 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.21%.

How severe is CVE-2025-1131?

CVE-2025-1131 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2025-1131?

Affected products include Sangoma Asterisk, Sangoma Certified Asterisk.

How do I fix CVE-2025-1131?

Upgrade affected software to a fixed version, for example Sangoma Asterisk 20.15.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-1131 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.