Description
Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX.
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 2.0.16 or 1.3.9, which fix the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat Native | 2.0.0 – ≤ 2.0.15, 1.3.0 – ≤ 1.3.8 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tomcat-native | 2.0.16-1 | — |
| Debian 13 | tomcat-native | No fix yet | — |
| Debian 12 | tomcat-native | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | tomcat-native | No fix yet | — |
| Ubuntu 26.04 LTS | tomcat-native | No fix yet | — |
| Ubuntu 24.04 LTS | tomcat-native | No fix yet | — |
| Ubuntu 22.04 LTS | tomcat-native | No fix yet | — |
| Ubuntu 20.04 LTS | tomcat-native | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | tomcat-native | No fix yet | — |
| Ubuntu 16.04 LTS | tomcat-native | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP7 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES 15 SP7 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP7 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP7 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP6 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP6 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES 15 SP6 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP6 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP6 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP5 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP4 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 12 SP5 | libapr1 | 1.6.5-4.13.1 | SUSE-SU-2026:4927-1 |
| SLES 12 SP5 | libtcnative-1-0 | 1.3.9-3.9.1 | SUSE-SU-2026:4927-1 |
| SLES 12 SP5 | tomcat | 9.0.123-3.182.2 | SUSE-SU-2026:4927-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat10 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat11 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 15 SP6 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES for SAP 15 SP6 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES for SAP 15 SP6 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP6 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP6 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES for SAP 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP5 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES for SAP 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP4 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat10 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat11 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLE HPC 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP5 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLE HPC 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP4 | libtcnative-2-0 | 2.0.16-150400.9.6.1 | SUSE-SU-2026:4658-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libtcnative-1-0 | 1.3.9-1.1 | openSUSE-SU-2026:11898-1 |
| openSUSE Tumbleweed | libtcnative-2-0 | 2.0.16-1.1 | openSUSE-SU-2026:11899-1 |
| openSUSE Leap 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat | 9.0.122-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat10 | 10.1.60-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat11 | 11.0.26-160000.1.1 | openSUSE-SU-2026:21984-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tomcat-native | 2.0.16-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat-native | 2.0.16-1.amzn2023.0.1 | ALAS2023-2026-3167 |
Advisories 10
- WID-SEC-2026-3559 Apache Tomcat APR/native Connector: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- SUSE-SU-2026:4927-1 Security update for libapr1, libtcnative-1-0, tomcat SUSE / openSUSE Security Updates · Oct 31, 2026
- SUSE-SU-2026:4658-1 Security update for libtcnative-2-0 SUSE / openSUSE Security Updates · Oct 14, 2026
- ALAS2023-2026-3167 Important: tomcat-native security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 12, 2026
- SUSE-SU-2026:4544-1 Security update for libtcnative-1-0, tomcat11 SUSE / openSUSE Security Updates · Oct 7, 2026
- SUSE-SU-2026:4546-1 Security update for libtcnative-1-0, tomcat, tomcat10 SUSE / openSUSE Security Updates · Oct 7, 2026
- SUSE-SU-2026:23985-1 Security update for libtcnative-1-0, libtcnative-2-0, tomcat, tomcat10, tomcat11 SUSE / openSUSE Security Updates · Oct 6, 2026
- openSUSE-SU-2026:21984-1 Security update for libtcnative-1-0, libtcnative-2-0, tomcat, tomcat10, tomcat11 SUSE / openSUSE Security Updates · Oct 1, 2026
- openSUSE-SU-2026:11898-1 libtcnative-1-0-1.3.9-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
- openSUSE-SU-2026:11899-1 libtcnative-2-0-2.0.16-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
References
- https://lists.apache.org/thread/dgyvfwb24nbk45ptvlhdyhdhl5o7k5ol vendor-advisory