CVE-2026-86243
Apache Tomcat Native: DoS via TLS handshake
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 23, 2026
- Updated
- Sep 23, 2026
- Reserved
- Sep 6, 2026
Description
Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash.
This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier, unsupported versions may also be affected.
Users are recommended to upgrade to version 1.3.9 or 2.0.16, which fix the issue.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-126 Buffer over-read
Affected Products
| Product | Versions |
|---|---|
Apache Tomcat NativeApache Software Foundation |
|
References
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