What’s Vulnerable › Vulnerabilities

CVE-2026-73581: Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-23 · updated 2026-10-29
• Weakness: CWE-299

Description

Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0-M1 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.59, 9.0.122, which fixes the issue.

Affected products

• Apache Tomcat: from 11.0.0-M1 through 11.0.25; from 10.1.0-M1 through 10.1.59; from 9.0.0.M1 through 9.0.121; from 8.5.0 through 8.5.100

References

• https://lists.apache.org/thread/r0dj3h1pbn4wv96fhsfrnz3t6874t6do
• http://www.openwall.com/lists/oss-security/2026/09/23/19

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