Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-30754

CVE-2026-30754HIGH

n/a n/a — A memory corruption vulnerability exists in FFmpeg before 8.1.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  H  H  H    8.8   .0052   43.2     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Mar 4   Reserved by mitre
  Sep 8   Published (CNA: mitre)
  Oct 15  EXPLOIT PUBLISHED — CVE-2026-30754. Public exploit reference added.

CWE-787 · CNA: mitre · CVSS v3.1 · 3 references · NVD status: Analyzed

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 4, 2026	Reserved	Reserved by mitre
September 8, 2026	Published	Published (CNA: mitre)
October 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-30754. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-787

References (3)

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746 [Issue Tracking, Patch]
https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6 [Third Party Advisory]
https://github.com/momo-trip/poc_ffmpeg [Exploit]

Authoritative record: CVE-2026-30754 at cve.org

Weaknesses: CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-30754 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.