Description
FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in the Bink video decoder because decode_frame() in libavcodec/bink.c ignores init_get_bits() failure. Attackers can supply a crafted Bink file with a frame of about 2^28 bytes, overflowing the bit count and crashing the process for denial of service.
Published: 2026-11-09
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: Denial of Service
Action: Patch
AI Analysis

Impact

FFmpeg through 9.0.2 contains a NULL pointer dereference in the Bink video decoder caused by the decode_frame() routine ignoring a failure returned by init_get_bits(). An attacker can supply a crafted Bink file with a frame of approximately 2^28 bytes, which overflows the bit count and triggers a crash, resulting in denial of service. The vulnerability is classified as CWE‑252.

Affected Systems

The affected product is FFmpeg. Versions 9.0.2 and earlier are vulnerable.

Risk and Exploitability

The CVSS score of 6.8 indicates moderate severity. EPSS is not available and the vulnerability is not listed in CISA KEV, suggesting limited current exploitation activity. The likely attack vector is file‑based: an attacker who can deliver a malicious Bink video to a system that has FFmpeg installed and has the Bink decoder enabled can cause the target process to crash, potentially disrupting services that rely on FFmpeg for media decoding.

Generated by OpenCVE AI on November 9, 2026 at 20:22 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to FFmpeg 9.0.3 or later where the Bink decoder bug has been fixed.
  • If an upgrade is not immediately possible, disable the Bink decoder in the FFmpeg configuration or use a patched build that removes the vulnerability.
  • Configure applications that use FFmpeg to reject or validate Bink files before decoding, preventing malformed inputs from triggering a crash.

Generated by OpenCVE AI on November 9, 2026 at 20:22 UTC.

Tracking

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Advisories

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History

Mon, 09 Nov 2026 19:15:00 +0000

Type Values Removed Values Added
Description FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in the Bink video decoder because decode_frame() in libavcodec/bink.c ignores init_get_bits() failure. Attackers can supply a crafted Bink file with a frame of about 2^28 bytes, overflowing the bit count and crashing the process for denial of service.
Title FFmpeg through 9.0.2 NULL Pointer Dereference in Bink Video Decoder
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-252
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Ffmpeg Ffmpeg
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T21:06:59.856Z

Reserved: 2026-11-09T16:44:49.119Z

Link: CVE-2026-125068

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-09T19:16:49.257

Modified: 2026-11-09T19:16:49.257

Link: CVE-2026-125068

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-09T20:30:16Z

Weaknesses