Heap-based buffer overflow in pjsip - #VU140967
Published: August 5, 2026
Vulnerability identifier: #VU140967
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denialo f service (DoS) attack.
The vulnerability exists due to a boundary error in pjmedia_h263_unpacketize() function. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and cause a denial of service condition on the target system.
Affected software
pjsip
Remediation
Install updates from vendor's website.
pjsip - update to 2.18