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CentOS Linux 8.4 [TuxCare] Security Update: exim / exim-greylist / exim-mon / exim-mysql / exim-pgsql (CENTOS8.4:CLSA-2026:1790290861)

medium Nessus Plugin ID 353148

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Synopsis

The CentOS Linux host is missing one or more security updates.

Description

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1790290861 advisory.

 - Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write. (CVE-2026-94054)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages based on the guidance in TuxCare advisory CENTOS8.4:CLSA-2026:1790290861.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1790290861

http://www.nessus.org/u?b30e6c4d

Plugin Details

Severity: Medium

ID: 353148

File Name: tuxcare_centos_8.4_CLSA-2026-1790290861.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/30/2026

Updated: 9/30/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-94054

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

Required KB Items: Host/OS/extended-third-party, Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2026

Vulnerability Publication Date: 9/19/2026

Reference Information

CVE: CVE-2026-94054

CLSA: 2026:1790290861