CVE-2011-3973: n/a vulnerability

CVE-2011-3973: cavsdec.c in libavcodec in FFmpeg before 0.7.4 and 0.8.x before 0.8.3 allows remote attackers to cause a de...

cavsdec.c in libavcodec in FFmpeg before 0.7.4 and 0.8.x before 0.8.3 allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, related to the decode_residual_block, check_for_slice, and cavs_decode_frame functions, a different vulnerability than CVE-2011-3362.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 23:53 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old FFmpeg video-decoding crash issue. A specially malformed Chinese AVS video file could make vulnerable FFmpeg versions crash when an application tries to decode it. The documented business impact is service disruption, not data theft or proven code execution. Exposure is most likely in legacy media-processing stacks, upload pipelines, transcoding services, or desktop/server software that still embeds vulnerable FFmpeg branches and decodes untrusted CAVS video files. Treat this as a targeted reliability risk in legacy media systems. Prioritize remediation where untrusted video uploads or automated transcoding are internet-facing; otherwise handle through normal legacy dependency hygiene. Mitigation focus: Inventory FFmpeg and embedded libavcodec versions across media-processing systems.; Upgrade FFmpeg to a fixed branch: 0.7.4, 0.8.3, or later as applicable.; Check current vendor or distribution advisories for supported package updates..

Prepared: Jun 28, 2026, 00:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 2, 2011, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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CVE List V5 sourceCVE List V5

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Products and packages named in the record

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Weakness

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