by Kastro
Paper/Archive/CVE-2026-86246

CVE-2026-86246

Apache Software Foundation Apache Tomcat Native — Apache Tomcat Native: Insecure OpenSSL options enabled

EPSS 0.3%CVSS 9.1
critical.is priorityof 100
33
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 28.3.283 × 205.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Apache Tomcat Native2.0.0 – 2.0.15–CNA
Apache Tomcat Native1.3.0 – 1.3.8–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/dgyvfwb24nbk45ptvlhdyhdhl5o7k5olrefopenwall.com/lists/oss-security/2026/09/23/32