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: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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
7.8HIGHmedium 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

September 9, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
Patch available.
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 / 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 / 151× 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 218 total refreshes for this CVE.

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

Related CVEs(same product + 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 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 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75142?
CVE-2026-75142 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-2026-75142?
A fix for CVE-2026-75142 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75142 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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