CVE-2011-3946
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote...
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
Exploit likelihood
What each source reports
NVD Score used
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
CVE-2011-3946- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
CVE-2011-3946- Updated
- 2026-11-02
EUVDEUVD-2011-3899 No score
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
EUVD-2011-3899- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wwfj-h5pc-cmm2 No score
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote...
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
GHSA-wwfj-h5pc-cmm2- Updated
- 2026-11-02
OSV No score
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
CVE-2011-3946- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-3946 No score
The ff_h264_decode_sei function in libavcodec/h264_sei.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Supplemental enhancement information (SEI) data, which triggers an infinite loop.
- Record
DEBIAN-CVE-2011-3946- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10926-1 No score
libav-tools-12.3-1.17 on GA media
These are all security issues fixed in the libav-tools-12.3-1.17 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10926-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ffmpegDebian:12 |
before 7:2.4.1-1 | 7:2.4.1-1 |
ffmpegDebian:13 |
before 7:2.4.1-1 | 7:2.4.1-1 |
ffmpegDebian:14 |
before 7:2.4.1-1 | 7:2.4.1-1 |
libavDebian:7 From an advisory covering 11 CVEs |
before 6:0.8.15-1, plus listed versions 6:0.8.10-16:0.8.12-16:0.8.13-16:0.8.6-16:0.8.7-16:0.8.8-16:0.8.9-1 |
6:0.8.15-1 |
libav-toolsopenSUSE:Tumbleweed From an advisory covering 12 CVEs |
before 12.3-1.17 | 12.3-1.17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-3946 is a medium vulnerability (CVSS 6.8) in Ffmpeg, published December 9, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.71%, the 93rd percentile. Fixed in ffmpeg 7:2.4.1-1.
References
ffmpeg.org/security.html
git.videolan.org?p=ffmpeg.git%3Ba=commitdiff%3Bh=9decfc17bb76da34734296048d390b176abf404c
nvd.nist.gov/vuln/detail/CVE-2011-3946
github.com/advisories/GHSA-wwfj-h5pc-cmm2
security-tracker.debian.org/tracker/CVE-2011-3946
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suse.com/security/cve/CVE-2011-3946