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[UPDATE] [high] ffmpeg RASC video decoder: Vulnerability enables Denial of Service and memory corruption

highCVE-2026-58049
A remote, anonymous attacker can exploit a vulnerability in ffmpeg to perform a Denial of Service attack or cause memory corruption.

CSIRTS triage

vendor: ffmpegproduct: ffmpegDenial of serviceMemory corruption
What
A vulnerability in the RASC video decoder allows denial of service or memory corruption.
Who is affected
Any system running ffmpeg that processes remote video files in RASC format.
Urgency
High priority; memory corruption and DoS in a widely-used media library warrants prompt patching.
Action
Update ffmpeg to a version with the CVE-2026-58049 fix.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
high
Published
2026-08-07
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2109

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-58049coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for ffmpeg RASC video decoder

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories