CVE-2026-75142

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%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.

CVSS v3
7.8
EG Score
7.8(medium)
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
3%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (3)

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

FFmpeg Stack Buffer Overflow in MPEG-PS Muxer via mpegenc.c | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-mpeg-ps-muxer-via-mpegenc-c
generic

avformat/mpegenc: reject stream counts that overflow the system header · 9d786e4b5e - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/9d786e4b5e9b8482651928574de33772aeee7be1
generic

#24087 - avformat/mpegenc: reject stream counts that overflow the system header - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24087

Vendor Advisories for CVE-2026-75142(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 / EcosystemFixed in / PatchReleasedSource
ubuntulibswscale9 (7:8.0.1-3ubuntu2+esm4) @ resolute2026-09-20ubuntu
ubuntulibswscale5 (7:4.4.2-0ubuntu0.22.04.1+esm15) @ jammy2026-09-20ubuntu

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 rangeFixed inDependents
ffmpeg7:5.1.3-1 ... 7:9.0.1-1 (59 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-1 ... 7:9.0.1-1 (23 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-1 ... 7:9.0.1-1 (19 versions)——

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 36× in last 7d / 136× 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 147 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-75142?
CVE-2026-75142 is a high vulnerability published on August 19, 2026. FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow…
When was CVE-2026-75142 disclosed?
CVE-2026-75142 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75142 actively exploited?
CVE-2026-75142 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 96.5% of all scored CVEs.
What is the CVSS score of CVE-2026-75142?
CVE-2026-75142 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-75142?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75142, 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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