CVE-2016-9821 json
Integer overflow in libavcodec/mpegvideo_parser.c in libav 11.8 allows remote attackers to cause a denial of service (crash) via a crafted…
published 2017-03-01 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10621
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Integer overflow in libavcodec/mpegvideo_parser.c in libav 11.8 allows remote attackers to cause a denial of service (crash) via a crafted file.
Patch / fix
- libav Ubuntu Pro 14.04 LTS 6:9.20-0ubuntu0.14.04.1+esm1
ubuntu advisories UBUNTU-CVE-2016-9821
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- blogs.gentoo.org https://blogs.gentoo.org/ago/2016/12/01/libav-multiple-crashes-from-the-undefined-behavior-sanitizer/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
blogs.gentoo.org
/ago/2016/12/01/libav-multiple-crashes-from-the-undefined-behavior-sanitizer/
exploit, third-party-advisory
-
debian.org
/security/2017/dsa-3833
vendor-advisory
-
securityfocus.com
/bid/94732
vdb-entry
Sources
- CVE List CVE-2016-9821
- NVD CVE-2016-9821
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.