CVE-2026-53434
CRITICALDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
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
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 43% of all known CVEs.
References
Related Vulnerabilities
Other CWE-390 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-30255 | Medium | 5.3 | 88% | - | Fix |
| CVE-2024-27919 | High | 7.5 | 87% | - | - |
| CVE-2025-26465 | Medium | 6.8 | 7.6% | - | Fix |
| CVE-2019-5051 | High | 8.8 | 3.9% | - | Fix |
| CVE-2021-40391 | Critical | 9.8 | 2.9% | - | Fix |
| CVE-2017-7485 | Medium | 5.9 | 2.0% | - | - |
Common questions
How do I fix CVE-2026-53434?
Published advisories record a fix for 24 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2026-53434 being actively exploited?
Not that we know of. CVE-2026-53434 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.55% is the estimated probability that it will be exploited in the next 30 days. That is higher than 43% of all scored CVEs.
How severe is CVE-2026-53434?
CVE-2026-53434 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-53434 affect?
Published advisories record a fix for jws7-tomcat (Rocky), jws7-tomcat (Red Hat / RHEL), jws7-tomcat-admin-webapps (Red Hat / RHEL), jws7-tomcat-admin-webapps (Rocky), and 20 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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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 2026-07-02.