Unchecked Return Value in pjsip - #VU150692
Published: September 17, 2026 / Updated: September 17, 2026
Vulnerability identifier: #VU150692
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-252
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to unchecked return values in pjpidf_tuple_get_status() when parsing a malformed PIDF presence body containing a tuple without a status child element. A remote user can send a malformed presence NOTIFY to cause a denial of service.
The sender must occupy the presentity or presence-server side of a presence subscription established by the application. Exploitation affects builds with assertions enabled, which is the default configuration.
Affected software
pjsip
Remediation
Install security update from vendor's website.
pjsip - update to 2.18