PT-2026-23652

CVE-2026-28799

Published

2026-03-06

Updated

2026-03-11

Description by

CVSS 4.0

8.7

High

MetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions PJSIP versions prior to 2.17

Description PJSIP, a multimedia communication library written in C, contains a heap use-after-free issue within its event subscription framework, specifically in the evsub.c file. This issue is triggered by a presence unsubscription request—a SUBSCRIBE request with an Expires value of 0. Successful exploitation could lead to a crash or potentially code execution.

Recommendations Update to version 2.17 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Arthurscchan

Vendors

Affected products

Weakness enumeration

CWE-416: Use After Free

Related identifiers