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CVE-2011-3952

22
FAUCET Score

CVE-2011-3952 describes a denial-of-service vulnerability in the decode_init function of libavcodec within FFmpeg and Libav, affecting versions before 0.10 and various 0.5.x, 0.6.x, 0.7.x, and 0.8.x releases respectively. This flaw allows remote attackers to crash an application and potentially execute arbitrary code by supplying a specially crafted KMVC encoded file with an excessively large palette size. The vulnerability has a CVSS score of 6.8, indicating a medium attack complexity and potential for partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.1CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:0.3:*:*:*:*:*:*:*
0.3.1CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:0.3.1:*:*:*:*:*:*:*
0.3.2CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:0.3.2:*:*:*:*:*:*:*
0.3.3CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:0.3.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 80th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ffmpeg.org
git.libav.org
libav.org
debian.org / security/2012/dsa-2494
ubuntu.com / usn/USN-1479-1