CVE-2019-11338

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
83%
KEV
Not listed

Published

April 19, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 10, 2026
Patch available. Sources: github_commit.
generic

Bugtraq: [SECURITY] [DSA 4449-1] ffmpeg security update

https://seclists.org/bugtraq/2019/May/60
generic Patch Available

[SECURITY] [DLA 1809-1] libav security update

https://lists.debian.org/debian-lts-announce/2019/05/msg00043.html
github_commit

commit 9ccc633068c6 (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit 9ccc633068c6 — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65b
github_commit

commit 54655623a826 (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit 54655623a826 — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e
generic

SecurityFocus

http://www.securityfocus.com/bid/108034

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibswscale5 (7:4.1.3-0ubuntu1) @ disco2026-05-23ubuntu
ubuntulibswscale5 (7:4.2.4-1ubuntu0.1) @ focal2026-05-23ubuntu

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

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ffmpeg—7:4.1.3-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ffmpeg—7:4.1.3-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ffmpeg—7:4.1.3-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ffmpeg—7:4.1.3-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libav6:11.11-1~deb8u1 ... 6:11.9-1~deb8u1 (19 versions)6:11.12-1~deb8u7—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:3.2.10-1~deb9u1 ... 7:3.2.9-1~deb9u1 (9 versions)7:3.2.14-1~deb9u1—

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 6× in last 7d / 24× 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. 2026-09-19 14:03 UTCOSV refresh
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:22 UTCEPSS rescore
  4. 2026-09-16 14:04 UTCEPSS rescore
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  17. 2026-08-31 18:04 UTCOSV refresh
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  1. 2026-08-19 17:00 UTCEPSS rescore
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  7. 2026-08-14 21:54 UTCOSV refresh
  8. 2026-08-13 21:56 UTCEPSS rescore
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  21. 2026-07-30 10:44 UTCOSV refresh
  22. 2026-07-30 01:27 UTCEPSS rescore
  23. 2026-07-28 15:32 UTCEPSS rescore
  24. 2026-07-26 14:51 UTCEPSS rescore
  25. 2026-07-25 14:14 UTCEPSS rescore
  26. 2026-07-24 14:14 UTCEPSS rescore
  27. 2026-07-24 14:14 UTCEPSS rescore
  28. 2026-07-23 14:15 UTCEPSS rescore
  29. 2026-07-23 01:38 UTCEG score recompute
  30. 2026-07-22 22:19 UTCEG score recompute
  31. 2026-07-22 14:05 UTCEPSS rescore
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  46. 2026-07-12 20:07 UTCOSV refresh
  47. 2026-07-12 05:43 UTCEPSS rescore
  48. 2026-07-11 08:24 UTCEPSS rescore
  49. 2026-07-09 19:06 UTCEPSS rescore
  50. 2026-07-08 15:11 UTCEPSS rescore
  51. 2026-07-07 13:42 UTCEPSS rescore
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  70. 2026-06-24 14:03 UTCEPSS rescore
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  72. 2026-06-24 05:29 UTCOSV refresh
  73. 2026-06-23 21:30 UTCEPSS rescore
  74. 2026-06-23 21:30 UTCEPSS rescore
  75. 2026-06-22 14:23 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-11338?
CVE-2019-11338 is a high vulnerability published on April 19, 2019. libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.
When was CVE-2019-11338 disclosed?
CVE-2019-11338 was first published in the National Vulnerability Database on April 19, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-11338 actively exploited?
CVE-2019-11338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.0% of all scored CVEs.
What is the CVSS score of CVE-2019-11338?
CVE-2019-11338 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2019-11338?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11338, 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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