Tomcat Native vulnerabilitiesRanked by how likely they are to be used.
Tomcat Native is made by Apache. We track 3 published vulnerabilities in it, across 87 versions. None of them is on the list of flaws known to be exploited today. If you run Tomcat Native, keep it on a version the vendor still supports.
We keep watching the known-exploited list.
Which Tomcat Native vulnerabilities are being exploited?
This is the list that matters most: flaws criminals are using now.
None of Tomcat Native's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.
Which Tomcat Native flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 4.1%CVE-2018-8020High
Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 has a flaw that does not properly check OCSP pre-produced responses, which are lists (multiple entries) of certificate statuses.
- 4.0%CVE-2018-8019High
When using an OCSP responder Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 did not correctly handle invalid responses.
- 3.5%CVE-2017-15698Medium
When parsing the AIA-Extension field of a client certificate, Apache Tomcat Native Connector 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34 did not correctly handle fields longer than 127 bytes.
- 0.6%CVE-2026-86243High
Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash.
- 0.3%CVE-2026-86246Critical
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...
- 0.2%CVE-2026-86247High
Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations.
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1 new flaw affects software Acme tracks
Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 has a flaw that does not properly check OCSP pre-produced responses, which are lists (multiple entries) of certificate statuses. Subsequently, revoked client certificates may not be properly identified, allowing for users to authenticate with revoked certificates to connections that require mutual TLS. Users not using OCSP checks are not affected by this vulnerability.
- Matched to
- Tomcat Native on Acme's software list
- What to do
- Plan in the vendor’s update
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 3 published vulnerabilities listed under the name Tomcat Native, across 87 versions.
None of Tomcat Native's vulnerabilities is on the list of flaws known to be exploited today.
Create a EdgeProtect account and track Tomcat Native. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.