CVE-2009-4633
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended,...
CVE-2009-4633 is a high vulnerability (CVSS 10.0) in Ffmpeg, published February 10, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.88%, the 94th percentile. Fixed in ffmpeg 4:0.5+svn20090706-3.
- Severity
- 10.0 HighCVSS 2.0, NVD
- Exploit chance
- 7.88%EPSS, 94th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
4:0.5+svn20090706-3ffmpeg +3 more
Description
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ffmpegDebian:12 | before 4:0.5+svn20090706-3 | 4:0.5+svn20090706-3 |
ffmpegDebian:13 | before 4:0.5+svn20090706-3 | 4:0.5+svn20090706-3 |
ffmpegDebian:14 | before 4:0.5+svn20090706-3 | 4:0.5+svn20090706-3 |
ffmpeg-debianDebian:5.0 From an advisory covering 9 CVEs | before 0.svn20080206-18+lenny1, plus listed versions 0.svn20080206-160.svn20080206-170.svn20080206-17+lenny10.svn20080206-18 | 0.svn20080206-18+lenny1 |
What each source reports
NVD Score used
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
CVE-2009-4633- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE ListNo score
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
CVE-2009-4633- Updated
- 2026-11-02
EUVDEUVD-2009-4598No score
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
EUVD-2009-4598- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pq8m-58c6-gxvfNo score
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended,...
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
GHSA-pq8m-58c6-gxvf- Updated
- 2026-11-02
OSVNo score
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
CVE-2009-4633- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-4633No score
vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.
- Record
DEBIAN-CVE-2009-4633- Updated
- 2026-11-02
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.
References
mandriva.com/security/advisories?name=MDVSA-2011:088
secunia.com/advisories/36805
securityfocus.com/bid/36465
roundup.ffmpeg.org/roundup/ffmpeg/issue1240
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scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
vupen.com/english/advisories/2011/1241
debian.org/security/2010/dsa-2000
ubuntu.com/usn/USN-931-1
nvd.nist.gov/vuln/detail/CVE-2009-4633
github.com/advisories/GHSA-pq8m-58c6-gxvf
security-tracker.debian.org/tracker/CVE-2009-4633