CVE-2011-0021

CVE-2011-0021 is a critical-severity vulnerability in Videolan Vlc Media Player with a CVSS 2.0 base score of 9.3. 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: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Videolan Vlc Media Player
• Published: 2011-01-25
• Last modified: 2026-06-16

Description

Multiple heap-based buffer overflows in cdg.c in the CDG decoder in VideoLAN VLC Media Player before 1.1.6 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted CDG video.

Frequently asked questions

What is CVE-2011-0021?

Multiple heap-based buffer overflows in cdg.c in the CDG decoder in VideoLAN VLC Media Player before 1.1.6 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted CDG video.

How severe is CVE-2011-0021?

CVE-2011-0021 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-0021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0021?

CVE-2011-0021 primarily affects Videolan Vlc Media Player. In total, 67 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-0021 published?

CVE-2011-0021 was published on 2011-01-25 and last updated on 2026-06-16.

References

• http://download.videolan.org/pub/videolan/vlc/1.1.6/vlc-1.1.6.tar.bz2
• http://git.videolan.org/?p=vlc.git%3Ba=commit%3Bh=f9b664eac0e1a7bceed9d7b5854fd9fc351b4aab
• http://openwall.com/lists/oss-security/2011/01/19/6
• http://openwall.com/lists/oss-security/2011/01/20/3
• http://www.securityfocus.com/bid/45927
• http://www.vupen.com/english/advisories/2011/0185
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64879
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12460

Affected products (67)

• cpe:2.3:a:videolan:vlc_media_player:*:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99b:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99e:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99f:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99g:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99h:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.1.99i:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.60:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.61:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.62:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.63:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.70:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.71:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.72:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.73:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.80:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.81:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.82:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.83:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.90:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.91:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.2.92:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:videolan:vlc_media_player:0.7.0:*:*:*:*:*:*:*

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All CVEs affecting Videolan Vlc Media Player →

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Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →