Linux Distros Unpatched Vulnerability : CVE-2026-53434

critical Nessus Plugin ID 323937

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue. (CVE-2026-53434)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Critical

ID: 323937

File Name: unpatched_CVE_2026_53434.nasl

Version: 1.5

Type: Local

Agent: unix

Family: Misc.

Published: 6/30/2026

Updated: 7/16/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.67

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.6

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:P/A:N

CVSS Score Source: CVE-2026-53434

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:tomcat10, p-cpe:/a:canonical:ubuntu_linux:tomcat11, p-cpe:/a:canonical:ubuntu_linux:tomcat6, p-cpe:/a:canonical:ubuntu_linux:tomcat7, p-cpe:/a:canonical:ubuntu_linux:tomcat9, p-cpe:/a:centos:centos:pki-servlet-4.0-api, p-cpe:/a:centos:centos:pki-servlet-engine, p-cpe:/a:centos:centos:tomcat-admin-webapps, p-cpe:/a:centos:centos:tomcat-docs-webapp, p-cpe:/a:centos:centos:tomcat-el-2.2-api, p-cpe:/a:centos:centos:tomcat-el-3.0-api, p-cpe:/a:centos:centos:tomcat-el-5.0-api, p-cpe:/a:centos:centos:tomcat-javadoc, p-cpe:/a:centos:centos:tomcat-jsp-2.2-api, p-cpe:/a:centos:centos:tomcat-jsp-2.3-api, p-cpe:/a:centos:centos:tomcat-jsp-3.1-api, p-cpe:/a:centos:centos:tomcat-jsvc, p-cpe:/a:centos:centos:tomcat-lib, p-cpe:/a:centos:centos:tomcat-servlet-3.0-api, p-cpe:/a:centos:centos:tomcat-servlet-4.0-api, p-cpe:/a:centos:centos:tomcat-servlet-6.0-api, p-cpe:/a:centos:centos:tomcat-webapps, p-cpe:/a:centos:centos:tomcat6-admin-webapps, p-cpe:/a:centos:centos:tomcat6-docs-webapp, p-cpe:/a:centos:centos:tomcat6-el-2.1-api, p-cpe:/a:centos:centos:tomcat6-javadoc, p-cpe:/a:centos:centos:tomcat6-jsp-2.1-api, p-cpe:/a:centos:centos:tomcat6-lib, p-cpe:/a:centos:centos:tomcat6-log4j, p-cpe:/a:centos:centos:tomcat6-servlet-2.5-api, p-cpe:/a:centos:centos:tomcat6-webapps, p-cpe:/a:centos:centos:tomcat6, p-cpe:/a:centos:centos:tomcat9-admin-webapps, p-cpe:/a:centos:centos:tomcat9-docs-webapp, p-cpe:/a:centos:centos:tomcat9-el-3.0-api, p-cpe:/a:centos:centos:tomcat9-jsp-2.3-api, p-cpe:/a:centos:centos:tomcat9-lib, p-cpe:/a:centos:centos:tomcat9-servlet-4.0-api, p-cpe:/a:centos:centos:tomcat9-webapps, p-cpe:/a:centos:centos:tomcat9, p-cpe:/a:centos:centos:tomcat, p-cpe:/a:debian:debian_linux:tomcat10, p-cpe:/a:debian:debian_linux:tomcat11, p-cpe:/a:redhat:enterprise_linux:pki-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:pki-servlet-engine, p-cpe:/a:redhat:enterprise_linux:tomcat-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat-el-2.2-api, p-cpe:/a:redhat:enterprise_linux:tomcat-el-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-el-5.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-javadoc, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-2.2-api, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-2.3-api, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-3.1-api, p-cpe:/a:redhat:enterprise_linux:tomcat-jsvc, p-cpe:/a:redhat:enterprise_linux:tomcat-lib, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-6.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat6-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat6-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat6-el-2.1-api, p-cpe:/a:redhat:enterprise_linux:tomcat6-javadoc, p-cpe:/a:redhat:enterprise_linux:tomcat6-jsp-2.1-api, p-cpe:/a:redhat:enterprise_linux:tomcat6-lib, p-cpe:/a:redhat:enterprise_linux:tomcat6-log4j, p-cpe:/a:redhat:enterprise_linux:tomcat6-servlet-2.5-api, p-cpe:/a:redhat:enterprise_linux:tomcat6-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat6, p-cpe:/a:redhat:enterprise_linux:tomcat9-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat9-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat9-el-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-jsp-2.3-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-lib, p-cpe:/a:redhat:enterprise_linux:tomcat9-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat9, p-cpe:/a:redhat:enterprise_linux:tomcat

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/22/2026

Reference Information

CVE: CVE-2026-53434

Detections

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