CVE-2026-125211 (GCVE-0-2026-125211)

Vulnerability from cvelistv5 – Published: 2026-11-09 19:11 – Updated: 2026-11-09 19:11
VLAI
Title
FFmpeg through 9.0.2 Heap Corruption via libaribcaption ASS Error Cleanup
Summary
FFmpeg through 9.0.2 contains an out-of-bounds read and invalid free vulnerability in aribcaption_trans_ass_subtitle() in libavcodec/libaribcaption.c that frees subtitle rectangles using region_count instead of num_rects. Attackers can supply crafted ARIB captions whose later region exceeds the 8 KiB AVBPrint limit, triggering cleanup that frees out-of-bounds pointers and corrupts the heap.
Severity
7.3 (High)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
FFmpeg FFmpeg Affected: 0 , ≤ 9.0.2 (semver)
    cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-10 00:00
Credits
Joshua Rogers (AISLE Research) Ruk Doe
Show details on NVD website
To clipboard 

{
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          "product": "FFmpeg",
          "repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
          "vendor": "FFmpeg",
          "versions": [
            {
              "lessThanOrEqual": "9.0.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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      "descriptions": [
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        }
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      "metrics": [
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            "attackRequirements": "PRESENT",
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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      "problemTypes": [
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            {
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      "providerMetadata": {
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      "references": [
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          "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24992"
        },
        {
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        },
        {
          "tags": [
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          "url": "https://github.com/FFmpeg/FFmpeg"
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          "tags": [
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  "cveMetadata": {
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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-125211",
    "datePublished": "2026-11-09T19:11:28.113Z",
    "dateReserved": "2026-11-09T18:15:16.026Z",
    "dateUpdated": "2026-11-09T19:11:28.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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