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Linux Distros Unpatched Vulnerability : CVE-2026-24734

high Nessus Plugin ID 299376

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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.

 - Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This issue affects Apache Tomcat Native: from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat:
 from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114. The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue. (CVE-2026-24734)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-24734

https://security-tracker.debian.org/tracker/CVE-2026-24734

https://ubuntu.com/security/CVE-2026-24734

Plugin Details

Severity: High

ID: 299376

File Name: unpatched_CVE_2026_24734.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 2/18/2026

Updated: 2/27/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-24734

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.4

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:tomcat, p-cpe:/a:redhat:enterprise_linux:tomcat9-servlet-4.0-api, p-cpe:/a:centos:centos:tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-el-5.0-api, p-cpe:/a:centos:centos:tomcat9-lib, p-cpe:/a:redhat:enterprise_linux:tomcat9, p-cpe:/a:centos:centos:tomcat-docs-webapp, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:tomcat-el-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-admin-webapps, p-cpe:/a:centos:centos:tomcat-lib, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:debian:debian_linux:tomcat11, p-cpe:/a:redhat:enterprise_linux:tomcat9-el-3.0-api, p-cpe:/a:canonical:ubuntu_linux:tomcat8, p-cpe:/a:centos:centos:tomcat-jsp-2.3-api, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:tomcat9-webapps, p-cpe:/a:centos:centos:tomcat-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat9-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-3.1-api, p-cpe:/a:redhat:enterprise_linux:tomcat-lib, p-cpe:/a:canonical:ubuntu_linux:tomcat6, p-cpe:/a:canonical:ubuntu_linux:tomcat7, p-cpe:/a:centos:centos:tomcat-el-5.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-2.3-api, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:tomcat9, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:tomcat9-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-el-3.0-api, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-webapps, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:redhat:enterprise_linux:tomcat9-jsp-2.3-api, p-cpe:/a:redhat:enterprise_linux:tomcat, p-cpe:/a:canonical:ubuntu_linux:tomcat10, p-cpe:/a:redhat:enterprise_linux:tomcat-admin-webapps, p-cpe:/a:centos:centos:tomcat9, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:tomcat-jsp-3.1-api, p-cpe:/a:centos:centos:tomcat-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-6.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-lib, p-cpe:/a:centos:centos:tomcat9-docs-webapp, p-cpe:/a:centos:centos:tomcat9-admin-webapps, p-cpe:/a:centos:centos:tomcat9-jsp-2.3-api, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:centos:centos:tomcat9-el-3.0-api, p-cpe:/a:centos:centos:tomcat-servlet-6.0-api, cpe:/o:canonical:ubuntu_linux:20.04:-:lts

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 1/23/2026

Reference Information

CVE: CVE-2026-24734

IAVA: 2026-A-0175