CVE-2026-8461

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-18. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution.

This vulnerability is associated with the file libavcodec/magicyuv.C.

This issue affects FFmpeg before version 8.1.2.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
68%
KEV
Not listed

Published

June 18, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic

#23159 - avcodec/magicyuv: reject slice_height misaligned with chroma vshift - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159

Vendor Advisories for CVE-2026-8461(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatffmpeg-0:6.1.6-1.el9ai2026-07-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 83× 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.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-07-27 07:00 UTCVendor advisory
  2. 2026-07-27 07:00 UTCGHSA enrichment
  3. 2026-07-26 17:40 UTCEG score recompute
  4. 2026-07-26 17:40 UTCVendor advisory
  5. 2026-07-26 17:40 UTCGHSA enrichment
  6. 2026-07-26 14:54 UTCEPSS rescore
  7. 2026-07-26 05:13 UTCEG score recompute
  8. 2026-07-26 05:13 UTCVendor advisory
  9. 2026-07-26 05:13 UTCGHSA enrichment
  10. 2026-07-25 14:18 UTCEPSS rescore
  11. 2026-07-24 14:18 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 03:23 UTCEG score recompute
  14. 2026-07-22 14:08 UTCEPSS rescore
  15. 2026-07-21 15:25 UTCEPSS rescore
  16. 2026-07-21 15:25 UTCEPSS rescore
  17. 2026-07-20 17:08 UTCEPSS rescore
  18. 2026-07-19 14:31 UTCEPSS rescore
  19. 2026-07-19 02:29 UTCEPSS rescore
  20. 2026-07-18 10:04 UTCEPSS rescore
  21. 2026-07-16 22:21 UTCGHSA enrichment
  22. 2026-07-16 17:03 UTCEPSS rescore
  23. 2026-07-16 10:16 UTCGHSA enrichment
  24. 2026-07-15 22:13 UTCGHSA enrichment
  25. 2026-07-15 16:57 UTCEPSS rescore
Show 75 more
  1. 2026-07-15 10:00 UTCGHSA enrichment
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-14 21:56 UTCGHSA enrichment
  4. 2026-07-14 09:54 UTCGHSA enrichment
  5. 2026-07-13 22:31 UTCEPSS rescore
  6. 2026-07-13 21:48 UTCGHSA enrichment
  7. 2026-07-13 09:39 UTCGHSA enrichment
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-12 21:36 UTCGHSA enrichment
  10. 2026-07-12 08:51 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-11 20:48 UTCGHSA enrichment
  13. 2026-07-11 08:45 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-10 20:42 UTCGHSA enrichment
  16. 2026-07-10 08:37 UTCGHSA enrichment
  17. 2026-07-09 20:34 UTCGHSA enrichment
  18. 2026-07-09 19:10 UTCEPSS rescore
  19. 2026-07-09 08:28 UTCGHSA enrichment
  20. 2026-07-08 20:26 UTCGHSA enrichment
  21. 2026-07-08 15:16 UTCEPSS rescore
  22. 2026-07-08 08:21 UTCGHSA enrichment
  23. 2026-07-07 20:17 UTCGHSA enrichment
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-07 13:46 UTCEPSS rescore
  26. 2026-07-07 08:15 UTCGHSA enrichment
  27. 2026-07-06 19:03 UTCGHSA enrichment
  28. 2026-07-06 16:27 UTCEPSS rescore
  29. 2026-07-06 16:27 UTCEPSS rescore
  30. 2026-07-06 06:33 UTCGHSA enrichment
  31. 2026-07-06 02:23 UTCEPSS rescore
  32. 2026-07-06 02:23 UTCEPSS rescore
  33. 2026-07-05 18:30 UTCGHSA enrichment
  34. 2026-07-05 06:27 UTCGHSA enrichment
  35. 2026-07-05 02:31 UTCEPSS rescore
  36. 2026-07-05 02:30 UTCEPSS rescore
  37. 2026-07-04 18:25 UTCGHSA enrichment
  38. 2026-07-04 06:31 UTCEPSS rescore
  39. 2026-07-04 06:31 UTCEPSS rescore
  40. 2026-07-04 06:11 UTCGHSA enrichment
  41. 2026-07-03 18:08 UTCGHSA enrichment
  42. 2026-07-03 06:00 UTCGHSA enrichment
  43. 2026-07-02 17:55 UTCGHSA enrichment
  44. 2026-07-02 05:51 UTCGHSA enrichment
  45. 2026-07-01 17:47 UTCGHSA enrichment
  46. 2026-07-01 15:07 UTCEPSS rescore
  47. 2026-07-01 05:42 UTCGHSA enrichment
  48. 2026-06-30 23:22 UTCEPSS rescore
  49. 2026-06-30 17:37 UTCGHSA enrichment
  50. 2026-06-30 05:34 UTCGHSA enrichment
  51. 2026-06-29 17:31 UTCGHSA enrichment
  52. 2026-06-29 14:06 UTCEPSS rescore
  53. 2026-06-29 05:26 UTCGHSA enrichment
  54. 2026-06-28 17:16 UTCGHSA enrichment
  55. 2026-06-28 14:07 UTCEPSS rescore
  56. 2026-06-28 05:13 UTCGHSA enrichment
  57. 2026-06-28 04:56 UTCEPSS rescore
  58. 2026-06-27 17:10 UTCGHSA enrichment
  59. 2026-06-27 05:07 UTCGHSA enrichment
  60. 2026-06-27 03:08 UTCEPSS rescore
  61. 2026-06-26 17:04 UTCGHSA enrichment
  62. 2026-06-26 05:02 UTCGHSA enrichment
  63. 2026-06-25 16:58 UTCGHSA enrichment
  64. 2026-06-25 13:50 UTCEPSS rescore
  65. 2026-06-25 04:55 UTCGHSA enrichment
  66. 2026-06-24 16:49 UTCGHSA enrichment
  67. 2026-06-24 14:05 UTCEPSS rescore
  68. 2026-06-24 04:45 UTCGHSA enrichment
  69. 2026-06-23 21:33 UTCEPSS rescore
  70. 2026-06-23 16:38 UTCGHSA enrichment
  71. 2026-06-23 04:34 UTCGHSA enrichment
  72. 2026-06-22 16:32 UTCGHSA enrichment
  73. 2026-06-22 14:25 UTCEPSS rescore
  74. 2026-06-22 04:16 UTCGHSA enrichment
  75. 2026-06-21 16:14 UTCGHSA enrichment

Publicly available exploits

(3 references)

Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC0xBlackash/CVE-2026-8461
    First seen Jun 26, 2026

    CVE-2026-8461

    Open source ↗
  • GitHub PoCY5neKO/CVE-2026-8461-EXP
    First seen Jun 24, 2026
    Open source ↗
  • GitHub PoCanyanything/CVE-2026-8461-PoC
    First seen Jun 23, 2026
    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-8461?
CVE-2026-8461 is a high vulnerability published on June 18, 2026. An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg before…
When was CVE-2026-8461 disclosed?
CVE-2026-8461 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8461 actively exploited?
CVE-2026-8461 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 32.2% of all scored CVEs.
What is the CVSS score of CVE-2026-8461?
CVE-2026-8461 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-8461?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8461, 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

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