[NEW] [high] ffmpeg: Multiple vulnerabilities

highCVE-2026-64830 CVE-2026-64831 CVE-2026-64832 CVE-2026-64833 CVE-2026-64834 CVE-2026-64835

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

CSIRTS triage

vendor: ffmpeg product: ffmpeg Remote code execution Information disclosure Denial of serviceOther

What: A remote, anonymous attacker can exploit multiple vulnerabilities in ffmpeg to execute arbitrary code, manipulate data, disclose confidential information, or cause a denial-of-service condition.
Who is affected: Users and deployments of ffmpeg.
Urgency: Remediation is high urgency due to the potential for remote code execution and other severe impacts.
Action: Update to the latest version of ffmpeg to mitigate these vulnerabilities.

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: 2026-07-23
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-2026-2491

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-2026-648300.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.
Low exploitation riskCVE-2026-648310.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
Low exploitation riskCVE-2026-648320.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.
Low exploitation riskCVE-2026-648330.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all scored CVEs.
Low exploitation riskCVE-2026-648340.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all scored CVEs.
Low exploitation riskCVE-2026-648350.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64830	coverage & exploitation status	NVD · CVE.org
CVE-2026-64831	coverage & exploitation status	NVD · CVE.org
CVE-2026-64832	coverage & exploitation status	NVD · CVE.org
CVE-2026-64833	coverage & exploitation status	NVD · CVE.org
CVE-2026-64834	coverage & exploitation status	NVD · CVE.org
CVE-2026-64835	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
high[NEW] [high] ffmpeg: Multiple vulnerabilitiescert-bund · 2026-07-27
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