Unscored severity · published Oct 20, 2026
CVE-2026-93446
Apache Tomcat: Possible TLS 1.3 connection failures
–
CVSS
0.2%
EPSS
No
On KEV
Description
Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently.
This issue affects Apache Tomcat: from 11.0.0-M21 through 11.0.26, from 10.1.25 through 10.1.60, from 9.0.90 through 9.0.122.
Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
11.0.0-M21 through 11.0.26; 10.1.25 through 10.1.60; 9.0.90 through 9.0.122 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93446
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-93446
lists.apache.org
https://lists.apache.org/thread.html/zh87okr5qspv4byzfpy2w6dqrokrnxzw
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/10/20/25
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