ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-30754

A memory corruption vulnerability exists in FFmpeg before 8.1.

Published Sep 8, 2026 · catalog updated Oct 15, 2026 · A memory corruption vulnerability

Check if you run it

No confirmed exploitation is on record for CVE-2026-30754. EPSS is 0.52%. Act only if a listed version of A memory corruption vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A memory corruption vulnerability).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.52%
Remediation
Advisory link
Affected products
cpe ffmpeg/ffmpeg

A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. This was detected using AddressSanitizer.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe ffmpeg/ffmpegversion unspecified

How to fix CVE-2026-30754

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-30754. EPSS is 0.52%. Act only if a listed version of A memory corruption vulnerability is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 8, 2026 · NIST NVD

    Detected

    A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. This was detected using AddressSanitizer.

  2. Oct 15, 2026 · NIST NVD

    Updated

    A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. This was detected using AddressSanitizer.

Sources

  • CVE.orgVulnerability recordCVE-2026-30754

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-30754

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-30754

    A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. Th

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.