CVE-2026-75144

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH 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

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

FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.

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
4%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (3)

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

FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-vc-2-dirac-rtp-packetizer
generic

avformat/rtpenc_vc2hq: reject data units larger than the RTP payload buffer · 1cdeb3c4e7 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cdeb3c4e7f1f8566d846b9b451e01c376398818
generic

#24091 - avformat/rtpenc_vc2hq: reject data units larger than the RTP payload buffer - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091

Vendor Advisories for CVE-2026-75144(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 17× 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 04:36 UTCEG score recompute
  2. 2026-08-21 04:36 UTCGHSA enrichment
  3. 2026-08-21 04:01 UTCEG score recompute
  4. 2026-08-21 04:01 UTCGHSA enrichment
  5. 2026-08-21 03:27 UTCEG score recompute
  6. 2026-08-21 03:27 UTCGHSA enrichment
  7. 2026-08-20 22:56 UTCEPSS rescore
  8. 2026-08-20 16:37 UTCEG score recompute
  9. 2026-08-20 16:37 UTCGHSA enrichment
  10. 2026-08-20 15:45 UTCEG score recompute
  11. 2026-08-20 15:45 UTCGHSA enrichment
  12. 2026-08-20 15:17 UTCGHSA enrichment
  13. 2026-08-20 04:28 UTCEG score recompute
  14. 2026-08-20 04:28 UTCGHSA enrichment
  15. 2026-08-19 17:38 UTCEG score recompute
  16. 2026-08-19 16:43 UTCEG score recompute
  17. 2026-08-19 16:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-75144?
CVE-2026-75144 is a high vulnerability published on August 19, 2026. FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into…
When was CVE-2026-75144 disclosed?
CVE-2026-75144 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75144 actively exploited?
CVE-2026-75144 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 96.4% of all scored CVEs.
What is the CVSS score of CVE-2026-75144?
CVE-2026-75144 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-75144?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75144, 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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