CVE-2026-86243
Apache Tomcat Native: DoS via TLS handshake
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.56 % · percentile 47 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-126 — Buffer Over-read
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-85267
- GCVE · GCVE-0-2026-86243
Affected configurations (NVD CPE)
cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*≥ 1.3.0 < 1.3.9cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*≥ 2.0.0 < 2.0.16
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Tomcat Native | affected 2.0.0 ≤ 2.0.15 ; affected 1.3.0 ≤ 1.3.8 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |