Is CVE-2021-25329 in the CISA KEV catalog?

No. CVE-2021-25329 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-25329?

CVE-2021-25329 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2021-25329?

CVE-2021-25329 has an EPSS score of 9.49% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-25329?

Upgrade tomcat9 on debian 11 to 9.0.43-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2021-25329

HIGHEPSS 95th pctl

7.0

CVSS v3

NVD

Description

The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.

How to fix

Remediation Available

tomcat9Debian

Fixed in:9.0.43-1CVE-2021-25329

libservlet3.0-javaUbuntu

Fixed in:7.0.52-1ubuntu0.16+esm1USN-6908-1

Fixed in:7.0.68-1ubuntu0.4+esm2USN-6908-1

Fixed in:7.0.78-1ubuntu0.1~esm1USN-6908-1

libtomcat7-javaUbuntu

Fixed in:7.0.52-1ubuntu0.16+esm1USN-6908-1

Fixed in:7.0.68-1ubuntu0.4+esm2USN-6908-1

libtomcat9-embed-javaUbuntu

Fixed in:9.0.16-3ubuntu0.18.04.2USN-5360-1

Fixed in:9.0.31-1ubuntu0.2USN-5360-1

libtomcat9-javaUbuntu

Fixed in:9.0.16-3ubuntu0.18.04.2USN-5360-1

Fixed in:9.0.31-1ubuntu0.2USN-5360-1

tomcat7Ubuntu

Fixed in:7.0.52-1ubuntu0.16+esm1USN-6908-1

Fixed in:7.0.68-1ubuntu0.4+esm2USN-6908-1

Fixed in:7.0.78-1ubuntu0.1~esm1USN-6908-1

tomcat9Ubuntu

Fixed in:9.0.16-3ubuntu0.18.04.2USN-5360-1

Fixed in:9.0.31-1ubuntu0.2USN-5360-1

tomcat9-commonUbuntu

Fixed in:9.0.16-3ubuntu0.18.04.2USN-5360-1

Fixed in:9.0.31-1ubuntu0.2USN-5360-1

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

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

9.49%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch3

Vendor Advisory1

lists.apache.org

Third-Party Advisory5

Other references8

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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 2024-11-21.