Is CVE-2011-3946 in the CISA KEV catalog?

No. CVE-2011-3946 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-3946?

CVE-2011-3946 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2011-3946?

CVE-2011-3946 has an EPSS score of 5.71% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-3946?

Upgrade ffmpeg on debian 11 to 7:2.4.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-3946

MEDIUMEPSS 92th pctl

6.8

CVSS v2

NVD

Description

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.

CWE-399Resource Management Errors

How to fix

Remediation Available

ffmpegDebian

Fixed in:7:2.4.1-1CVE-2011-3946

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

5.71%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3103	High	10.0	90%	-	-
CVE-2009-0075	High	9.3	85%	-	-
CVE-2005-1790	Low	2.6	83%	-	-
CVE-2010-0806	High	8.8	82%	KEV	-
CVE-2009-2526	High	7.8	82%	-	-
CVE-2015-1868	High	7.8	82%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.