Advisory severityUnratedApache Software Foundation

Advisory [CVE-2020-9484 +2] Incomplete fix for CVE-2020-9484

This security Apache Software Foundation advisory covers CVE-2021-25329 and CVE-2020-9484 and 1 more CVE affecting Apache Tomcat.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 3 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

CVE-2021-25329 Source published Mar 1, 2021Source updated Oct 9, 2026

VulniPulse record published Oct 9, 2026Record updated Oct 9, 2026

CVE-2020-9484 CVE-2020-9494 CVE-2021-25329

Affected products & platforms

Apache Software FoundationTomcat

Open source advisory

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Summary

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.

Affected versions

Apache Tomcat Apache Tomcat 10 before 10.0.0
Apache Tomcat Apache Tomcat 9 before 9.0.41
Apache Tomcat Apache Tomcat 8.5 before 8.5.61
Apache Tomcat Apache Tomcat 7 before 7.0.107

Official advisory · medium-confidence parse· fetched 13 days ago·verify at source

Fixed versions

10.0.0
9.0.41
8.5.61
7.0.107

Official advisory · medium-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

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.

Official advisory · medium-confidence parse· fetched 13 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2020-9484 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

Official resources

Apache Tomcat security bulletins (per major version) (target: 10.0.0 / 9.0.41 / 8.5.61)
Official documentation
This advisory names 10.0.0 / 9.0.41 / 8.5.61 as the first fixed releases — official upgrade documentation for Apache Tomcat security bulletins (per major version).
ASF Security — reporting & CVE process
Official documentation
The Apache Software Foundation's official security page: how ASF CVEs are published and where each project's advisories live.
Apache project downloads (fixed releases)
Official documentation
Official ASF download tree — fetch the fixed release named in this advisory from the project's directory.

Discussion(0)

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