CVE-2026-70632

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 14, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

avcodec/cfhd: reject transform-2 output wider than the plane · 16b2049d4d - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/16b2049d4d5222db6cd7c031409058571c94f6a9
generic

avcodec/cfhd: reject transform-2 output wider than the plane · db05df9d13 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/db05df9d135fb56a4babb836d5e9f5c1d984e087
generic

avcodec/cfhd: add 3d transform support · 1006a21512 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1006a2151236f9235bf02822f263b3fb0532111e
generic

#23898 - avcodec/cfhd: reject transform-2 output wider than the plane - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23898

Vendor Advisories for CVE-2026-70632(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:4.3.2-0+deb11u2 ... 7:9.0-1 (92 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:5.1.3-1 ... 7:9.0-1 (58 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-1 ... 7:9.0-1 (22 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-1 ... 7:9.0-1 (18 versions)——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 30× in last 7d / 63× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 06:26 UTCEG score recompute
  2. 2026-08-21 06:26 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 18:33 UTCGHSA enrichment
  5. 2026-08-20 06:41 UTCGHSA enrichment
  6. 2026-08-19 18:48 UTCEG score recompute
  7. 2026-08-19 18:48 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 05:45 UTCGHSA enrichment
  10. 2026-08-18 17:53 UTCEG score recompute
  11. 2026-08-18 17:52 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 04:23 UTCGHSA enrichment
  15. 2026-08-17 16:31 UTCEG score recompute
  16. 2026-08-17 16:31 UTCGHSA enrichment
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-17 04:24 UTCGHSA enrichment
  19. 2026-08-16 16:31 UTCEG score recompute
  20. 2026-08-16 16:31 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 04:39 UTCEG score recompute
  24. 2026-08-16 04:39 UTCGHSA enrichment
  25. 2026-08-16 02:15 UTCEPSS rescore
Show 38 more
  1. 2026-08-15 16:47 UTCGHSA enrichment
  2. 2026-08-15 04:54 UTCEG score recompute
  3. 2026-08-15 04:54 UTCGHSA enrichment
  4. 2026-08-15 01:31 UTCEPSS rescore
  5. 2026-08-14 17:01 UTCGHSA enrichment
  6. 2026-08-14 05:09 UTCEG score recompute
  7. 2026-08-14 05:09 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 17:16 UTCGHSA enrichment
  10. 2026-08-13 05:23 UTCGHSA enrichment
  11. 2026-08-12 17:31 UTCEG score recompute
  12. 2026-08-12 17:31 UTCGHSA enrichment
  13. 2026-08-12 13:51 UTCEPSS rescore
  14. 2026-08-12 05:39 UTCGHSA enrichment
  15. 2026-08-11 17:46 UTCEG score recompute
  16. 2026-08-11 17:46 UTCGHSA enrichment
  17. 2026-08-11 05:48 UTCEG score recompute
  18. 2026-08-11 05:48 UTCGHSA enrichment
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 17:56 UTCGHSA enrichment
  21. 2026-08-10 05:49 UTCGHSA enrichment
  22. 2026-08-09 17:56 UTCEG score recompute
  23. 2026-08-09 17:56 UTCGHSA enrichment
  24. 2026-08-09 13:47 UTCEPSS rescore
  25. 2026-08-09 06:04 UTCGHSA enrichment
  26. 2026-08-08 18:12 UTCEG score recompute
  27. 2026-08-08 18:12 UTCGHSA enrichment
  28. 2026-08-08 16:37 UTCEPSS rescore
  29. 2026-08-08 06:19 UTCGHSA enrichment
  30. 2026-08-07 18:27 UTCEG score recompute
  31. 2026-08-07 18:27 UTCGHSA enrichment
  32. 2026-08-07 17:27 UTCEG score recompute
  33. 2026-08-07 17:27 UTCGHSA enrichment
  34. 2026-08-07 10:30 UTCEG score recompute
  35. 2026-08-07 10:30 UTCGHSA enrichment
  36. 2026-08-06 22:38 UTCEG score recompute
  37. 2026-08-06 22:15 UTCEG score recompute
  38. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70632?
CVE-2026-70632 is a high vulnerability published on August 6, 2026. FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhddecode() function fails to…
When was CVE-2026-70632 disclosed?
CVE-2026-70632 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70632 actively exploited?
CVE-2026-70632 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.6% of all scored CVEs.
What is the CVSS score of CVE-2026-70632?
CVE-2026-70632 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70632?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70632, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-70632

Explore →

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