CVE-2026-75141

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 31, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
Patch available.
generic

FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-hvcc-box-writer-via-hevc-muxing
generic

avformat/hevc: reject hvcC NAL arrays that overflow the 16-bit count · acf5d7cdc1 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/acf5d7cdc1f9ae8752c23e1ea8d7f355ed780781
generic

#24088 - avformat/hevc: reject hvcC NAL arrays that overflow the 16-bit count - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24088

Vendor Advisories for CVE-2026-75141(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibswscale-ffmpeg3 (7:2.8.17-0ubuntu0.1+esm17) @ xenial2026-10-05ubuntu
ubuntulibswscale9 (7:8.0.1-3ubuntu2+esm4) @ resolute2026-10-05ubuntu

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.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:5.1.3-1 ... 7:9.0.2-1 (60 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:9.0.2-1 (24 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:9.0.1-1 (19 versions)
  • every version up to 7:9.0.2-1: fixed in 7:9.0.2-1
—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 34× in last 7d / 142× 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 214 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-75141?
CVE-2026-75141 is a high vulnerability published on August 19, 2026. FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers…
When was CVE-2026-75141 disclosed?
CVE-2026-75141 was first published on August 19, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75141 actively exploited?
CVE-2026-75141 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75141?
CVE-2026-75141 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75141?
A fix for CVE-2026-75141 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75141 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-75141

Explore →

Is Your Infrastructure Affected by CVE-2026-75141?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs