No exploitation reportedFix available

CVE-2019-17542

Q: Is CVE-2019-17542 actively exploited?

Active exploitation of CVE-2019-17542 has not been confirmed. Its EPSS score was 2.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-17542?

CVE-2019-17542 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2019-10-14
Fixed in4.1.5 · 4.0.5 · 3.4.7 · 3.2.15 · 2.8.16
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

FFmpeg before 4.2 has a heap-based buffer overflow in vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c.

Timeline

dates in UTC

2019-10-1402:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-17542?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-17542?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Ffmpeg

Branch	Affected	Fixed in	Source
4.1	≥ 4.1, < 4.1.5	4.1.5	NVD
4.0	≥ 4.0, < 4.0.5	4.0.5	NVD
3.4	≥ 3.4, < 3.4.7	3.4.7	NVD
3.2	≥ 3.2, < 3.2.15	3.2.15	NVD
2.8	< 2.8.16	2.8.16	NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
16.4	= 16.04	no fix published	NVD
18.4	= 18.04	no fix published	NVD
20.4	= 20.04	no fix published	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
8.0	= 8.0	no fix published	NVD
9.0	= 9.0	no fix published	NVD
10.0	= 10.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Ffmpeg to 4.1.5 · 4.0.5 · 3.4.7 · 3.2.15 · 2.8.16

Advisories and patches

github.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2019-10-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-17542?

FFmpeg before 4.2 has a heap-based buffer overflow in vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c.

Is CVE-2019-17542 actively exploited?

Active exploitation of CVE-2019-17542 has not been confirmed. Its EPSS score was 2.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-17542?

CVE-2019-17542 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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