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CVE-2026-77396
pjsip · pjproject

PJSIP: Heap buffer overflow in the AVI parser

Description

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.

Affected Products

VendorProductVersions
pjsippjproject<= 2.17

References

  • https://github.com/pjsip/pjproject/security/advisories/GHSA-6p2p-5wf8-h5hr(x_refsource_CONFIRM)
  • https://github.com/pjsip/pjproject/commit/7ecc6584969a923c4190b6912afbf5952b5a4b9f(x_refsource_MISC)

Related News (1 articles)

Tier C
VulDB37d ago
CVE-2026-77396 | pjsip pjproject up to 2.17 AVI Parser avi_player.c out-of-bounds write
→ No new info (linked only)

Discussion (0)

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CISA KEV❌ No
Actively exploited❌ No
CWECWE-122, CWE-787
PublishedSep 18, 2026
Trending Score0
Source articles1
Independent1
Info Completeness0/14
Missing: cve_id, title, description, vendor, product, versions, cvss, epss, cwe, kev, exploit, patch, iocs, mitre_attack

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Related CVEs (5)

MEDIUMPRE-CVE
Multiple vulnerabilities in PJSIP
Trending: 23
HIGHCVE-2026-84975
PJSIP: TLS server identity (hostname) verification bypass via embedded NUL in certificate SubjectAltName (OpenSSL and GnuTLS backends)
Trending: 1
NONECVE-2026-57159
PJSIP: SDP parser out-of-bounds write in remote payload-type map maintenance
NONECVE-2026-57163
PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend
NONECVE-2026-57162
PJSIP: Stack overflow parsing SDP a=crypto attributes

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Sep 18, 2026
Discovered by ZDM
Sep 18, 2026