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tomcat-native vulnerabilities

Vulnerabilities published for tomcat-native in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 7

  1. CVE-2026-86247

    High · CVSS 7.4EPSS 0.2%No fix published

    Apache Tomcat Native: Client certificate requirements can be down-graded

    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.

    Published Updated
  2. CVE-2026-86246

    Critical · CVSS 9.1EPSS 0.35%No fix published

    Apache Tomcat Native: Insecure OpenSSL options enabled

    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.

    Published Updated
  3. CVE-2026-86243

    High · CVSS 7.5EPSS 0.56%No fix published

    Apache Tomcat Native: DoS via TLS handshake

    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.

    Published Updated
  4. CVE-2018-8020

    High · CVSS 7.4EPSS 4.15%Fix available

    CVE-2018-8020

    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.

    • Update to 1.2.17-1
    Published Updated
  5. CVE-2018-8019

    High · CVSS 7.4EPSS 4.02%Fix available

    CVE-2018-8019

    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. This allowed for revoked client certificates to be incorrectly identified. It was therefore possible for users to authenticate with revoked certificates when using mutual TLS. Users not using OCSP checks are not affected by this vulnerability.

    • Update to 1.2.17-1
    Published Updated
  6. CVE-2017-15698

    Medium · CVSS 5.9EPSS 3.53%Fix available

    CVE-2017-15698

    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. The result of the parsing error was to skip the OCSP check. It was therefore possible for client certificates that should have been rejected (if the OCSP check had been made) to be accepted. Users not using OCSP checks are not affected by this vulnerability.

    • Update to 1.2.16-1
    Published Updated
  7. CVE-2009-3555

    Critical · CVSS 9.8EPSS 87.26%Public exploitFix available

    CVE-2009-3555

    The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-re

    • Update to 1.1.18-1
    Published Updated

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