Debian dsa-6522 : exim4 - security update

high Nessus Plugin ID 350852

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6522 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6522-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso September 27, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : exim4 CVE ID : CVE-2026-94054 CVE-2026-94056 CVE-2026-94057 Debian Bug : 1148506

Several vulnerabilities were discovered in the Exim mail transport agent, which could result in SMTP smuggling, information disclosure, denial of service or the execution of arbitrary code.

For the stable distribution (trixie), these problems have been fixed in version 4.98.2-1+deb13u5.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/exim4

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Solution

Upgrade the exim4 packages.

Plugin Details

Severity: High

ID: 350852

File Name: debian_DSA-6522.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 9/27/2026

Updated: 9/27/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.2

Percentile: 50.43

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-94056

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:exim4-base, p-cpe:/a:debian:debian_linux:exim4-config, p-cpe:/a:debian:debian_linux:exim4-daemon-heavy, p-cpe:/a:debian:debian_linux:exim4-daemon-light, p-cpe:/a:debian:debian_linux:exim4-dev, p-cpe:/a:debian:debian_linux:exim4, p-cpe:/a:debian:debian_linux:eximon4

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/27/2026

Vulnerability Publication Date: 9/19/2026

Reference Information

CVE: CVE-2026-94054, CVE-2026-94056, CVE-2026-94057

Detections

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