Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-52295

CVE-2026-52295LOW

FFmpeg before 9.0 has an out-of-bounds read because the copied extradata lacked required padding before GetBitContext-based access in lib…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   N   N  U  N  N  L    2.9   .0018    6.4     —

AFFECTED
  Product  Versions     Fixed
  FFmpeg   unspecified  —

TIMELINE
  Jun 8   Reserved by mitre
  Sep 1   Published (CNA: mitre)
  Sep 13  RESCORED — CVE-2026-52295 (FFmpeg). CVSS 6.2 → 2.9 (NVD).

CWE-125, CWE-120 · CNA: mitre · CVSS v3.1 · 3 references · NVD status: Awaiting Analysis

Description

FFmpeg before 9.0 has an out-of-bounds read because the copied extradata lacked required padding before GetBitContext-based access in libavformat/iamf_writer.c.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 8, 2026	Reserved	Reserved by mitre
September 1, 2026	Published	Published (CNA: mitre)
September 13, 2026	RESCORED	RESCORED — CVE-2026-52295 (FFmpeg). CVSS 6.2 → 2.9 (NVD).

Affected

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

Weaknesses

CWE-125 · CWE-120

References (3)

Authoritative record: CVE-2026-52295 at cve.org

Vendors: ffmpeg

Weaknesses: CWE-125 · CWE-120

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-52295 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 Sunday, October 4, 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.