[NEW] [high] ffmpeg: Multiple vulnerabilities

highCVE-2026-66036 CVE-2026-66037 CVE-2026-66038 CVE-2026-66039 CVE-2026-66040 CVE-2026-66041

A remote, anonymous attacker can exploit multiple vulnerabilities in ffmpeg to cause memory corruption, execute arbitrary code, trigger a denial-of-service condition, or disclose confidential information.

CSIRTS triage

vendor: ffmpeg product: ffmpeg Memory corruption Remote code execution Denial of service Information disclosure

What: Multiple vulnerabilities in ffmpeg can lead to memory corruption, arbitrary code execution, denial of service, or information disclosure.
Who is affected: Deployments of ffmpeg.
Urgency: Remediation is high due to the critical nature of the vulnerabilities and potential for exploitation.
Action: Update ffmpeg to the latest version.

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: 2026-07-27
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-2026-2526

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.

Low exploitation riskCVE-2026-660360.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-660370.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-660380.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
Low exploitation riskCVE-2026-660390.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
Low exploitation riskCVE-2026-660400.55% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all scored CVEs.
Low exploitation riskCVE-2026-660410.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-66036	coverage & exploitation status	NVD · CVE.org
CVE-2026-66037	coverage & exploitation status	NVD · CVE.org
CVE-2026-66038	coverage & exploitation status	NVD · CVE.org
CVE-2026-66039	coverage & exploitation status	NVD · CVE.org
CVE-2026-66040	coverage & exploitation status	NVD · CVE.org
CVE-2026-66041	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for ffmpeg

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.

highCVE-2026-67290: FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the TSMF FFmpeg deco…nvd · 2026-08-01
high[UPDATE] [high] ffmpeg: Vulnerability allows code execution and Denial of Servicecert-bund · 2026-07-31
medium[UPDATE] [medium] ffmpeg: Vulnerability allows Denial of Servicecert-bund · 2026-07-27
highCVE-2026-66041: FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnera…nvd · 2026-07-24
highCVE-2026-66040: FFmpeg through 8.1.2, fixed in commit b506faf, contains a heap out-of-bounds write vulnerabili…nvd · 2026-07-24
highCVE-2026-66039: FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerabilit…nvd · 2026-07-24