CVE-2026-86246

Apache Tomcat Native: Insecure OpenSSL options enabled

Published Sep 23, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apache tomcat Native
CPEs cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*
Vendors & Products Apache tomcat Native
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apache Tomcat
Vendors & Products Apache
Apache apache Tomcat
Type Values Removed Values Added
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.
Title Apache Tomcat Native: Insecure OpenSSL options enabled
Weaknesses CWE-1188
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Sep 23, 2026, 6:10 PM
Reserved
Sep 6, 2026, 9:45 AM
Status
Analyzed
Published
Sep 23, 2026, 1:17 PM
Modified
Oct 6, 2026, 1:50 PM