Vulnerability details
CVE-2026-86247
Apache Software Foundation Apache Tomcat Native
Apache Tomcat Native: Client certificate requirements can be down-graded
CVSS 3.1
7.4High
Official description
Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.4High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat Native | 1.3.0 ≤ v ≤ 1.3.8 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat Native | 2.0.0 ≤ v ≤ 2.0.15 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-09-23
- Last updated
- 2026-09-23
- State
- Published
- Assigner (CNA)
- apache
Exploit prediction (EPSS)
0.2%
Probability of exploitation in 30 days
10.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-366Race condition within a thread