Insufficient verification of data authenticity in pjsip - #VU140817
Published: August 3, 2026
Vulnerability identifier: #VU140817
CSH Severity: Medium
CVSS v4: 8.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect media or signaling traffic and cause a denial of service.
The vulnerability exists due to improper authentication in the legacy simple STUN client when processing STUN Binding Responses for public-address discovery. A remote attacker can send a forged Binding Response to redirect media or signaling traffic and cause a denial of service.
Only applications that use a STUN server without ICE for public-address discovery are affected. Applications that use ICE for STUN, or that do not configure a STUN server, are not affected.
Affected software
pjsip
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.