CVE-2026-34235
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
PJSIP before version 2.17 has a heap out-of-bounds read vulnerability in the VP9 RTP unpacketizer. Insufficient bounds checking on payload descriptor length may cause reads beyond the allocated RTP buffer.
Risk Assessment
Attackers can cause application crashes or leak sensitive memory data by sending crafted RTP packets.
Recommendation
Update PJSIP to version 2.17. If not needed, disable the VP9 codec.
Original NVD description (English source)
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap out-of-bounds read vulnerability exists in PJSIP's VP9 RTP unpacketizer that occurs when parsing crafted VP9 Scalability Structure (SS) data. Insufficient bounds checking on the payload descriptor length may cause reads beyond the allocated RTP payload buffer. This issue has been patched in version 2.17. A workaround for this issue involves disabling VP9 codec if not needed.