TI-2026-69649 Aliases CVE-2026-107676 GHSA-77pg-jq65-mg2f

Uninitialized memory disclosure in FFmpeg HDR10+ metadata serializer

LOW 21CWE-908Published 2026-10-08 · Updated 2026-10-14

Key facts

Attack vector: Local
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-908 and the CVSS impact.

Summary

FFmpeg through 9.0.2 contains an uninitialized memory disclosure flaw in av_dynamic_hdr_plus_to_t35(), which leaves up to three payload bytes unset when tone_mapping_flag is 0 (CWE-908). An attacker who supplies crafted Matroska T.35 BlockAdditional or HEVC/AV1 SEI metadata can make remuxing or transcoding write leaked process memory into output files.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in av_dynamic_hdr_plus_to_t35() that leaves up to three payload bytes uninitialized when tone_mapping_flag is 0. Attackers can supply crafted Matroska T.35 BlockAdditional or HEVC/AV1 SEI metadata so that remuxing or transcoding writes leaked process memory into output files.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00142 3rd percentileScored 2026-11-07

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
FFmpeg	FFmpeg	up to 9.0.2	—	No fix listed	CNA

FFmpeg VendorFFmpeg Affected up to 9.0.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ffmpeg:ffmpeg::::::::	up to 9.0.2	Vulnerable	FFmpeg

cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* Versions up to 9.0.2 Vulnerable ·FFmpeg

Remediation

The sources list no fixed version for FFmpeg. Red Hat's plan for Red Hat Enterprise Linux AI (RHEL AI) 3 and Red Hat OpenShift AI (RHOAI) is none available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux AI (RHEL AI) 3	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	No fix yet: Fix deferred

Timeline

2026-10-08 Threatist record created from CVE-2026-107676
2026-10-09 Alias added: GHSA-77pg-jq65-mg2f
2026-10-09 Affected versions changed · Red Hat
2026-10-09 CVSS score added · Red Hat
2026-10-14 CISA SSVC decision points changed

References

Patch 2

Other 2

TI-2025-19015 FFmpeg git-master before commit d5873b was discovered to contain a memory leak in the component libavutil/iamf.c. CVSS 3.1HIGH 8.8
TI-2024-21238 FFmpeg 7.0 contains a heap-buffer-overflow at libavfilter/vf_tiltandshift.c:189:5 in copy_column. CVSS 3.1HIGH 8.4
TI-2023-06050 Ffmpeg: null pointer dereference in ffmpeg hls parsing CVSS 3.1HIGH 7.5
TI-2023-28420 Buffer Overflow vulnerability in Ffmpeg v.N113007-g8d24a28d06 allows a local attacker to… CVSS 3.1HIGH 8.0
TI-2023-27357 FFmpeg v.n6.1-3-g466799d4f5 allows a heap-based buffer overflow via the… CVSS 3.1HIGH 8.0
TI-2023-27044 Buffer Overflow vulnerability in FFmpeg version n6.1-3-g466799d4f5, allows a local… CVSS 3.1HIGH 8.0

See all 514 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences