CVE-2026-86246Apache Tomcat Native: Insecure OpenSSL options enabled

9.1CriticalCVSS base score
0.35%Exploitation in 30 daysEPSS · top 71% of all CVEs
NoKnown exploitednot in CISA's KEV catalog
NonePublic exploitsnone known yet

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.

Timeline

2026
6 Sept 2026
6 Sept 2026
ID reserved
By apache
23 Sept 202617 days later
23 Sept 2026· 17 days later
Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-86246, by who scored it
Scored by	CVSS	Score	Vector
CISA-ADPADP (enrichment)	3.1	Critical9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVDNVD · Analyzed	3.1	Critical9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS (exploitation in 30 days): 0.35% · top 71% of all CVEs (15 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: yes · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.

Affected products

Apache Software Foundation · Apache Tomcat Native
- affected 2.0.0 – ≤ 2.0.15
- affected 1.3.0 – ≤ 1.3.8

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-86246](https://cveledger.app/badge/CVE-2026-86246.svg)](https://cveledger.app/cve/CVE-2026-86246)

Record last updated 23 Sept 2026, 18:10 UTC.