FFmpeg through 9.0.2 Uninitialized Memory Disclosure via HDR10+ Metadata Serializer
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.
CVE-2026-107676
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-107676
FFmpeg
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
"vendor": "FFmpeg",
"product": "FFmpeg",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "9.0.2"
}
],
"packageURL": "pkg:github/ffmpeg/ffmpeg",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-107676
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #21325 · Revision 1
- Added to Heist Feed
- Publisher date