CVE-2026-53434 Details
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-53434
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.37 Probability of exploitation activity being observed over the next 30 days (29th percentile)
CVSS score for CVE-2026-53434
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.1 Critical
Products affected by CVE-2026-53434
Tomcat 10.1.24
Tomcat 10.1.25
Tomcat 10.1.26
Tomcat 10.1.28
Tomcat 10.1.29
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-53434 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,996 36.23%
CN 626 11.36%
DE 352 6.39%
IN 314 5.70%
KR 168 3.05%
BR 159 2.89%
GB 128 2.32%
FR 123 2.23%
JP 118 2.14%
IE 116 2.11%

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CVE-2026-53434 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 3,317 76.45%
Telecommunications 564 13.00%
Education 193 4.45%
Government/Politics 83 1.91%
Finance 43 0.99%
Business Services 37 0.85%
Manufacturing 20 0.46%
Transportation 18 0.41%
Retail 9 0.21%
Media/Entertainment 9 0.21%

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