How severe is CVE-2011-3945?

CVE-2011-3945 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2011-3945 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3945?

CVE-2011-3945 primarily affects Ffmpeg. In total, 40 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3945?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3945 published?

CVE-2011-3945 was published on 2012-08-20 and last updated on 2026-06-16.

CVE-2011-3945

CVE-2011-3945 is a medium-severity vulnerability in Ffmpeg with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ffmpeg
Published: 2012-08-20
Last modified: 2026-06-16

Description

The decode_frame function in the KVG1 decoder (kgv1dec.c) in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11, and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted media file.

Frequently asked questions

What is CVE-2011-3945?: The decode_frame function in the KVG1 decoder (kgv1dec.c) in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11, and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted media file.
How severe is CVE-2011-3945?: CVE-2011-3945 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2011-3945 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3945?: CVE-2011-3945 primarily affects Ffmpeg. In total, 40 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3945?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3945 published?: CVE-2011-3945 was published on 2012-08-20 and last updated on 2026-06-16.

References

Affected products (40)

cpe:2.3:a:ffmpeg:ffmpeg:0.7:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.6:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.7:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.8:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.9:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.7.11:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.5:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.6:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.7:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.8:*:*:*:*:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:0.8.10:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.4:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.5:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.6:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.5.7:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6.3:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6.4:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.6.5:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7:beta1:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7:beta2:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.7.4:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.8:*:*:*:*:*:*:*
cpe:2.3:a:libav:libav:0.8:beta2:*:*:*:*:*:*

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