CVE-2026-77396 (GCVE-0-2026-77396)

Vulnerability from cvelistv5 – Published: 2026-09-18 17:07 – Updated: 2026-09-21 20:49
VLAI
Title
PJSIP: Heap buffer overflow in the AVI parser
Summary
PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/avi_player.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is derived from the declared media dimensions. A crafted AVI file can therefore cause an attacker-controlled out-of-bounds write past the heap allocation when an application plays the file or pulls its frames. The existing size assertion does not protect production release builds, where assertions are disabled. Typical local playback can crash the process, while applications that accept untrusted AVI sources expose a stronger memory-corruption condition. No fixed version is available as of this review.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:24 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7640 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pjsip pjproject Affected: <= 2.17
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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