How severe is CVE-2011-1582?

CVE-2011-1582 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-1582 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-2011-1582?

CVE-2011-1582 primarily affects Apache Tomcat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1582?

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

When was CVE-2011-1582 published?

CVE-2011-1582 was published on 2011-05-20 and last updated on 2026-06-16.

CVE-2011-1582

CVE-2011-1582 is a medium-severity vulnerability in Apache Tomcat with a CVSS 2.0 base score of 4.3. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apache Tomcat
Published: 2011-05-20
Last modified: 2026-06-16

Description

Apache Tomcat 7.0.12 and 7.0.13 processes the first request to a servlet without following security constraints that have been configured through annotations, which allows remote attackers to bypass intended access restrictions via HTTP requests. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1088, CVE-2011-1183, and CVE-2011-1419.

Frequently asked questions

What is CVE-2011-1582?: Apache Tomcat 7.0.12 and 7.0.13 processes the first request to a servlet without following security constraints that have been configured through annotations, which allows remote attackers to bypass intended access restrictions via HTTP requests. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1088, CVE-2011-1183, and CVE-2011-1419.
How severe is CVE-2011-1582?: CVE-2011-1582 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-1582 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-2011-1582?: CVE-2011-1582 primarily affects Apache Tomcat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1582?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1582 published?: CVE-2011-1582 was published on 2011-05-20 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*

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