How severe is CVE-2011-3834?

CVE-2011-3834 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-3834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3834?

CVE-2011-3834 primarily affects Nullsoft Winamp. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3834?

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-2011-3834 published?

CVE-2011-3834 was published on 2011-12-16 and last updated on 2026-06-16.

CVE-2011-3834

CVE-2011-3834 is a critical-severity vulnerability in Nullsoft Winamp 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-189.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Nullsoft Winamp
Published: 2011-12-16
Last modified: 2026-06-16

Description

Multiple integer overflows in the in_avi.dll plugin in Winamp before 5.623 allow remote attackers to execute arbitrary code via an AVI file with a crafted value for (1) the number of streams or (2) the size of the RIFF INFO chunk, leading to a heap-based buffer overflow.

Frequently asked questions

What is CVE-2011-3834?: Multiple integer overflows in the in_avi.dll plugin in Winamp before 5.623 allow remote attackers to execute arbitrary code via an AVI file with a crafted value for (1) the number of streams or (2) the size of the RIFF INFO chunk, leading to a heap-based buffer overflow.
How severe is CVE-2011-3834?: CVE-2011-3834 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-3834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3834?: CVE-2011-3834 primarily affects Nullsoft Winamp. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3834?: 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-2011-3834 published?: CVE-2011-3834 was published on 2011-12-16 and last updated on 2026-06-16.

References

Affected products (60)

cpe:2.3:a:nullsoft:winamp:*:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:0.20a:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:0.92:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:1.006:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:1.90:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.0:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.6:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.9:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.10:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.91:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.92:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:2.95:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.0:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.01:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.1:-:surround:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.02:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.2:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.3:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.03:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.04:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.05:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.5:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.6:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.06:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.07:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.08c:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.08d:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.08e:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.09:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.11:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.12:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.13:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.21:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.22:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.23:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.24:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.31:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.32:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.33:*:*:*:*:*:*:*
cpe:2.3:a:nullsoft:winamp:5.34:*:*:*:*:*:*:*

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