How severe is CVE-2011-3376?

CVE-2011-3376 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2011-3376 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3376?

CVE-2011-3376 primarily affects Apache Tomcat. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3376?

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

When was CVE-2011-3376 published?

CVE-2011-3376 was published on 2011-11-11 and last updated on 2026-06-16.

CVE-2011-3376

CVE-2011-3376 is a medium-severity vulnerability in Apache Tomcat with a CVSS 2.0 base score of 4.4. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.4)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apache Tomcat
Published: 2011-11-11
Last modified: 2026-06-16

Description

org/apache/catalina/core/DefaultInstanceManager.java in Apache Tomcat 7.x before 7.0.22 does not properly restrict ContainerServlets in the Manager application, which allows local users to gain privileges by using an untrusted web application to access the Manager application's functionality.

Frequently asked questions

What is CVE-2011-3376?: org/apache/catalina/core/DefaultInstanceManager.java in Apache Tomcat 7.x before 7.0.22 does not properly restrict ContainerServlets in the Manager application, which allows local users to gain privileges by using an untrusted web application to access the Manager application's functionality.
How severe is CVE-2011-3376?: CVE-2011-3376 has a CVSS 2.0 base score of 4.4, rated medium severity.
Is CVE-2011-3376 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3376?: CVE-2011-3376 primarily affects Apache Tomcat. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3376?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3376 published?: CVE-2011-3376 was published on 2011-11-11 and last updated on 2026-06-16.

References

Affected products (23)

cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*

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