CRITICAL

CVE-2020-12284

CVSS v3

9.8

CRITICAL

EPSS Score

3.9 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2020-12284 Red Hat Product Security
ffmpeg: heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check in libavcodec/cbs_jpeg.c

Full record on NVD

Description

cbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.1 and 4.2.2 has a heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check.

Technical details

Published: 2020-04-28

Frequently asked questions

What is CVE-2020-12284?

cbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.1 and 4.2.2 has a heap-based buffer overflow during JPEG_MARKER_SOS handling because of a missing length check.

Is CVE-2020-12284 actively exploited?

Active exploitation of CVE-2020-12284 has not been confirmed. Its EPSS score was 3.9% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12284?

CVE-2020-12284 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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