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CVE-2026-64830: ffmpeg from 2.1 (inclusive), through 8.1.2 (inclusive); +1 more affected products
CVE-2026-64830. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.00646 (percentile 0.50381), scored 24-Oct-2026.
Affected technology
ffmpeg · from 2.1 (inclusive), through 8.1.2 (inclusive)
ffmpeg
FFmpeg · 2.1 through 8.1.2, dbd495f066a85ba96b17433f4306582aa37c3951
FFmpeg
Description’s affected range: versions 2.1 through 8.1.2
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction
What an attacker can do
Attackers can craft a subtitle file with excessive distinct stream IDs to trigger unbounded writes beyond the vobsub->q[] array boundary via ff_subtitles_queue_insert(), potentially achieving arbitrary code execution in any application using FFmpeg's VobSub demuxer. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-122
- CCR priority
- 35.4 /100 (P4)
- CVSS 3.1
- 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · Vendor/CNA
- EPSS
- 0.00646 · percentile 0.50381 · 2026-10-24
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-24 16:36:51.698835+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-64830.html