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Back to active CVEs
High · CVSS 7.0CVE-2021-25329

Incomplete fix for CVE-2020-9484CVE-2021-25329

Answer in brief

CVE-2021-25329 records a High severity (CVSS 7.0) vulnerability in Incomplete fix for CVE-2020-9484. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Tomcat (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 1, 2021Updated Oct 8, 2026Source checked Oct 8, 2026First seen by HOL Aug 28, 2026Material review Oct 8, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
59 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache Tomcat (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone10:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone7:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone8:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:10.0.0:milestone9:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.6.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.5.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:database:12.2.0.1:*:*:*:enterprise:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:database:19c:*:*:*:enterprise:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:database:21c:*:*:*:enterprise:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:graph_server_and_client:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:managed_file_transfer:12.2.1.4.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:oracle:siebel_ui_framework:21.9:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache Tomcatgeneric>=Apache Tomcat 10 <10.0.0 || >=Apache Tomcat 9 <9.0.41 || >=Apache Tomcat 8.5 <8.5.61 || >=Apache Tomcat 7 <7.0.10710.0.0, 9.0.41, 8.5.61, 7.0.107

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Tomcat.
  2. 2Review the reported fix. Update Apache Software Foundation/Apache Tomcat to 10.0.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Mar 1, 2021

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 28, 2026

Sources and claim methodology

  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencelists.debian.org
  • Source referencesecurity.gentoo.org
  • Source referencesecurity.netapp.com
  • Source referencedebian.org
  • Source referenceoracle.com
  • Source referenceoracle.com
  • Source referenceoracle.com
  • Source referenceopenwall.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

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  • Unauthenticated JSON API Authorization Bypass Vulnerability in TP-Link Tapo C325WBSame generic ecosystem
  • Unauthenticated RTSP Tunnel Denial-of-Service Vulnerability in TP-Link Tapo C325WBSame generic ecosystem
  • Predictable Media Stream Pre-Shared Key Vulnerability in TP-Link Tapo C325WBSame generic ecosystem
  • Eog: eog: arbitrary code execution via heap buffer overflow in png metadata readerSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
NVD-CWE-noinfo
Source
CVE List V5
Source checked
Oct 8, 2026
References
17 linked sources
Open source record