HOMEVULNERABILITIESCVE-2020-12284
CRITICAL

CVE-2020-12284

CWE-787Published: April 28, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-12284 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
ffmpeg1 product(s)
ffmpeg
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/a3a3730b5456ca00587455004d40c047f7b20a99
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/a3a3730b5456ca00587455004d40c047f7b20a99
ADVISORYhttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734
ADVISORYhttps://security.gentoo.org/glsa/202007-58
ADVISORYhttps://usn.ubuntu.com/4431-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4722
ADVISORYhttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734
ADVISORYhttps://security.gentoo.org/glsa/202007-58
ADVISORYhttps://usn.ubuntu.com/4431-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4722

All References (12)

→
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734Exploit · Issue Tracking · Vendor Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726Patch · Third Party Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/a3a3730b5456ca00587455004d40c047f7b20a99Patch · Third Party Advisory
→
https://security.gentoo.org/glsa/202007-58Third Party Advisory
→
https://usn.ubuntu.com/4431-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4722Third Party Advisory
→
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19734Exploit · Issue Tracking · Vendor Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/1812352d767ccf5431aa440123e2e260a4db2726Patch · Third Party Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/a3a3730b5456ca00587455004d40c047f7b20a99Patch · Third Party Advisory
→
https://security.gentoo.org/glsa/202007-58Third Party Advisory
→
https://usn.ubuntu.com/4431-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4722Third Party Advisory

Quick Facts

CVE IDCVE-2020-12284
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected3 vendor(s)
PublishedApr 28, 2020

Related CVEs (CWE-787)

CVE-2013-5610
10.0
CVE-2012-0751
10.0
CVE-2002-2227
10.0
CVE-2026-42369
10.0
CVE-2011-1807
10.0
CVE-2014-1478
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-12284 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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