CVE-2011-4353

The (1) av_image_fill_pointers, (2) vp5_parse_coeff, and (3) vp6_parse_coeff functions in FFmpeg 0.5.x before 0.5.7, 0.6.x before 0.6.4, 0.7.x before 0.7.9, and 0.8.x before 0.8.8; and in Libav 0.5.x before 0.5.6, 0.6.x before 0.6.4, and 0.7.x before 0.7.3 allow remote attackers to cause a denial of service (out-of-bounds read) via a crafted VP5 or VP6 stream.

Published: 2012-08-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2011-4353 is rated Moderate Risk (49.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.20%). Core evidence: EPSS rose +2.48% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4353

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.72% 3.20% +2.48%
2 2025-03-30 0.95% 0.72% -0.24%
3 2025-03-29 0.95%

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4353

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-4353

OS Trackers for CVE-2011-4353

vendor priority summary link
debian not yet assigned CVE-2011-4353 not yet assigned priority: Debian including 1 source packages (ffmpeg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-4353
gentoo high CVE-2011-4353: 1 GLSA(s) (201310-12), 1 atom(s) (media-video/ffmpeg); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4353
ubuntu low CVE-2011-4353 low priority: Ubuntu including 4 source packages (ffmpeg, ffmpeg-extra, libav, libav-extra), 24 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): DNE 11, released 9, needs-triage 3, ignored 1. https://ubuntu.com/security/CVE-2011-4353

Affected software / configurations for CVE-2011-4353

Vendor Product Version Raw CPE
ffmpeg ffmpeg 0.5 cpe:2.3:a:ffmpeg:ffmpeg:0.5:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.5.1 cpe:2.3:a:ffmpeg:ffmpeg:0.5.1:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.5.2 cpe:2.3:a:ffmpeg:ffmpeg:0.5.2:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.5.3 cpe:2.3:a:ffmpeg:ffmpeg:0.5.3:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.5.4 cpe:2.3:a:ffmpeg:ffmpeg:0.5.4:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.5.5 cpe:2.3:a:ffmpeg:ffmpeg:0.5.5:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.6 cpe:2.3:a:ffmpeg:ffmpeg:0.6:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.6.1 cpe:2.3:a:ffmpeg:ffmpeg:0.6.1:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.6.2 cpe:2.3:a:ffmpeg:ffmpeg:0.6.2:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7 cpe:2.3:a:ffmpeg:ffmpeg:0.7:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.1 cpe:2.3:a:ffmpeg:ffmpeg:0.7.1:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.2 cpe:2.3:a:ffmpeg:ffmpeg:0.7.2:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.3 cpe:2.3:a:ffmpeg:ffmpeg:0.7.3:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.6 cpe:2.3:a:ffmpeg:ffmpeg:0.7.6:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.7 cpe:2.3:a:ffmpeg:ffmpeg:0.7.7:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.7.8 cpe:2.3:a:ffmpeg:ffmpeg:0.7.8:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.0 cpe:2.3:a:ffmpeg:ffmpeg:0.8.0:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.1 cpe:2.3:a:ffmpeg:ffmpeg:0.8.1:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.2 cpe:2.3:a:ffmpeg:ffmpeg:0.8.2:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.5 cpe:2.3:a:ffmpeg:ffmpeg:0.8.5:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.6 cpe:2.3:a:ffmpeg:ffmpeg:0.8.6:*:*:*:*:*:*:*
ffmpeg ffmpeg 0.8.7 cpe:2.3:a:ffmpeg:ffmpeg:0.8.7:*:*:*:*:*:*:*
libav libav 0.5 cpe:2.3:a:libav:libav:0.5:*:*:*:*:*:*:*
libav libav 0.5.1 cpe:2.3:a:libav:libav:0.5.1:*:*:*:*:*:*:*
libav libav 0.5.2 cpe:2.3:a:libav:libav:0.5.2:*:*:*:*:*:*:*
libav libav 0.5.3 cpe:2.3:a:libav:libav:0.5.3:*:*:*:*:*:*:*
libav libav 0.5.4 cpe:2.3:a:libav:libav:0.5.4:*:*:*:*:*:*:*
libav libav 0.5.5 cpe:2.3:a:libav:libav:0.5.5:*:*:*:*:*:*:*
libav libav 0.6 cpe:2.3:a:libav:libav:0.6:*:*:*:*:*:*:*
libav libav 0.6.1 cpe:2.3:a:libav:libav:0.6.1:*:*:*:*:*:*:*
libav libav 0.6.2 cpe:2.3:a:libav:libav:0.6.2:*:*:*:*:*:*:*
libav libav 0.6.3 cpe:2.3:a:libav:libav:0.6.3:*:*:*:*:*:*:*
libav libav 0.6.4 cpe:2.3:a:libav:libav:0.6.4:*:*:*:*:*:*:*
libav libav 0.6.5 cpe:2.3:a:libav:libav:0.6.5:*:*:*:*:*:*:*
libav libav 0.7 cpe:2.3:a:libav:libav:0.7:*:*:*:*:*:*:*
libav libav 0.7.1 cpe:2.3:a:libav:libav:0.7.1:*:*:*:*:*:*:*
libav libav 0.7.2 cpe:2.3:a:libav:libav:0.7.2:*:*:*:*:*:*:*

References for CVE-2011-4353

cvelogic Threat Intelligence