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CVE-2026-77396

7.1, high

Pjsip pjproject Heap-based Buffer Overflow Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.1, high high CVSS v3.1
EPSS, next 30 days
0.2% higher than 6% of scored CVEs
Exploitation
No public evidence
Published
18 Sept 202629 days ago

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.

Details

Vendor
Pjsip
Product
pjproject
Weakness
CWE-122 (opens in a new tab)
Status
Analyzed
Updated
16 Oct 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

References 2

Patches and fixes 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Pjsip CVEs

Every Pjsip CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-57162 Pjsip pjproject Stack-based Buffer Overflow Vulnerability EPSS 0.6% 9.1, critical
  • CVE-2026-57163 Pjsip pjproject Stack-based Buffer Overflow Vulnerability EPSS 0.4% 9.1, critical
  • CVE-2026-57159 PJSIP is a free and open source multimedia communication library written in C EPSS 0.6% 7.5, high
  • CVE-2026-57161 Pjsip pjproject Stack-based Buffer Overflow Vulnerability EPSS 0.5% 8.2, high

Beyond this page

Is CVE-2026-77396 in your network?

This page tells you how dangerous CVE-2026-77396 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.