CVE-2026-65637 Details
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.



This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.



Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-65637
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%).
0.75 Probability of exploitation activity being observed over the next 30 days (53nd percentile)
CVSS score for CVE-2026-65637
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.
9.8 Critical
Products affected by CVE-2026-65637
Tomcat 9.0.115
Tomcat 11.0.20
Tomcat 9.0.116
Tomcat 10.1.53
Tomcat 10.1.54
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-2026-65637 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 727 44.44%
CN 154 9.41%
DE 112 6.85%
IN 71 4.34%
JP 50 3.06%
FR 41 2.51%
IE 40 2.44%
NL 36 2.20%
SG 33 2.02%
CA 32 1.96%

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CVE-2026-65637 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 1,056 76.08%
Education 106 7.64%
Telecommunications 103 7.42%
Government/Politics 32 2.31%
Finance 31 2.23%
Business Services 10 0.72%
Manufacturing 10 0.72%
Retail 9 0.65%
Healthcare/Wellness 7 0.50%
Media/Entertainment 6 0.43%

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