tomcat-native: Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a...
CVE-2026-86243 is fixed in 11 products on 1 platform, first by RHSA-2026:93618, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| jws7-mod_cluster · RHEL 10 | 2.1.1-1.Final_redhat_00001.1.el10jws | RHSA-2026:93618 | Sep 23, 2026 |
| jws7-tomcat · RHEL 10 | 11.0.21-10.redhat_00010.1.el10jws | RHSA-2026:93618 | Sep 23, 2026 |
| jws7-tomcat-native · RHEL 10 | 1.3.7-4.redhat_4.el10jws | RHSA-2026:93618 | Sep 23, 2026 |
| libtcnative-1-0 · opensuse-leap 16.0 | 1.3.9-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| libtcnative-1-0 · sles 15.6 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| libtcnative-1-0 · sles 15.7 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| libtcnative-1-0 · sles 16.0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| libtcnative-2-0 · opensuse-leap 16.0 | 2.0.16-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| libtcnative-2-0 · sles 15.6 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 | Nov 7, 2026 |
| libtcnative-2-0 · sles 15.7 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 | Nov 7, 2026 |
| libtcnative-2-0 · sles 16.0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat · opensuse-leap 16.0 | 9.0.122-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat · sles 15.6 | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat · sles 15.7 | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat · sles 16.0 | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat-native · Debian 14 | 2.0.16-1 | DEBIAN-CVE-2026-86243 | Sep 24, 2026 |
| tomcat-native · amzn 2023 | 2.0.16-1.amzn2023.0.1 | ALAS2023-2026-3167 | Nov 7, 2026 |
| tomcat-native-debuginfo · amzn 2023 | 2.0.16-1.amzn2023.0.1 | ALAS2023-2026-3167 | Nov 7, 2026 |
| tomcat-native-debugsource · amzn 2023 | 2.0.16-1.amzn2023.0.1 | ALAS2023-2026-3167 | Nov 7, 2026 |
| tomcat10 · opensuse-leap 16.0 | 10.1.60-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat10 · sles 15.6 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat10 · sles 15.7 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat10 · sles 16.0 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat11 · opensuse-leap 16.0 | 11.0.26-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat11 · sles 15.6 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| tomcat11 · sles 15.7 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| tomcat11 · sles 16.0 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
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