CVE-2026-125210
7, highFFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in aribcaption_trans_text_subtitle() in libavcodec/libaribcaption.c…
- CVSS
- 7, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 9 Nov 2026yesterday
Description
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in aribcaption_trans_text_subtitle() in libavcodec/libaribcaption.c when decoding with sub_type text. Attackers can supply a crafted ARIB STD-B24 caption stream with zero regions, causing a pointer write past a zero-sized sub->rects allocation and corrupting heap memory.
Details
- Vendor
- FFmpeg
- Product
- FFmpeg
- Weakness
- CWE-131 (opens in a new tab)
- Status
- Received
- Updated
- 9 Nov 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References 5
Patches and fixes 1
Other references 4
- code.ffmpeg.org /FFmpeg/FFmpeg/pulls/24992 (opens in a new tab)
- github.com /FFmpeg/FFmpeg (opens in a new tab)
- github.com /FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libaribcaption.c#L799 (opens in a new tab)
- vulncheck.com /advisories/ffmpeg-through-9.0.2-heap-overflow-in-libaribcaption-text-subtitle-decoding (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other FFmpeg CVEs
Every FFmpeg CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-125181 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125196 FFmpeg Heap-based Buffer Overflow Vulnerability 7, high
- CVE-2026-125201 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125202 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125203 FFmpeg Out-of-Bounds Write Vulnerability 7.8, high
- CVE-2026-125204 FFmpeg Heap-based Buffer Overflow Vulnerability 7, high
- CVE-2026-125208 FFmpeg Out-of-Bounds Write Vulnerability 7, high
- CVE-2026-125209 FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a heap buffer overflow vulnerability in the DVD subtitle encoder that underestimates… 7.8, high
Beyond this page
Is CVE-2026-125210 in your network?
This page tells you how dangerous CVE-2026-125210 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
-
EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-125210 comes with the devices to patch.
Learn more about EXYS7600 OCELOT -
EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 10 Nov 2026, not the live upstream state.