CVE-2026-86243
Last modified
CVE-2026-86243 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash. 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 1.3.9 or 2.0.16, which fix the issue..
Description
Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash. 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 1.3.9 or 2.0.16, which fix the issue.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat Native | >= 2.0.0, <= 2.0.15; >= 1.3.0, <= 1.3.8 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-86243?
How severe is CVE-2026-86243?
How do I fix CVE-2026-86243?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-86238A vulnerability was determined in projectworlds Online Exami…4.3
- CVE-2026-86239A vulnerability was identified in liufee FeehiCMS up to 2.1.…5.3
- CVE-2026-8624The LJ comments import: reloaded plugin for WordPress is vul…6.1
- CVE-2026-86240A security flaw has been discovered in liufee FeehiCMS up to…4.7
- CVE-2026-86241A weakness has been identified in liufee FeehiCMS up to 2.1.…4.3
- CVE-2026-86242Bifrost HTTP transport before 2.0.0 accepts an enabled custo…8.1
- CVE-2026-86244A security vulnerability has been detected in FastAdmin up t…4.3
- CVE-2026-86245A vulnerability was detected in itsourcecode Sales and Inven…6.3
- CVE-2026-86246Initialization of a resource with an insecure default vulner…9.1
- CVE-2026-86247Race condition within a thread vulnerability in Apache Tomca…7.4
- CVE-2026-86248CLIENT_CERT authentication does not fail as expected for som…9.8
- CVE-2026-8625The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PD…6.4
Are you affected by CVE-2026-86243?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST