[UPDATE] [medium] ffmpeg: Multiple vulnerabilities allow Denial of Service
A remote, anonymous attacker can exploit multiple vulnerabilities in ffmpeg to conduct a Denial of Service attack.
CSIRTS triage
- What
- Multiple vulnerabilities in ffmpeg allow remote attackers to conduct Denial of Service attacks.
- Who is affected
- Users of ffmpeg are affected by these vulnerabilities.
- Urgency
- Remediation is medium urgency as the vulnerabilities can be exploited remotely but are not currently known to be actively exploited.
- Action
- Users should update to the latest version of ffmpeg.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1070
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-2026-309970.34% 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-2026-309980.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all scored CVEs.
- Low exploitation riskCVE-2026-309990.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-30997 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-30998 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-30999 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownDSA-6361-1 ffmpeg - security updatedebian
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
More from CERT-Bund (BSI) Security Advisories
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