RockyLinux 10 : dovecot (RLSA-2026:13498)

high Nessus Plugin ID 312381

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Synopsis

The remote RockyLinux host is missing one or more security updates.

Description

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:13498 advisory.

* dovecot: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command (CVE-2025-59032)

* dovecot: denial of service via crafted message before authentication (CVE-2026-27858)

* dovecot: denial of service via specially crafted NOOP command (CVE-2026-27857)

Tenable has extracted the preceding description block directly from the RockyLinux 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

Update the affected packages.

Plugin Details

Severity: High

ID: 312381

File Name: rocky_linux_RLSA-2026-13498.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 5/6/2026

Updated: 5/6/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-27857

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:N/I:N/A:H

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

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:dovecot, p-cpe:/a:rocky:linux:dovecot-debuginfo, p-cpe:/a:rocky:linux:dovecot-debugsource, p-cpe:/a:rocky:linux:dovecot-devel, p-cpe:/a:rocky:linux:dovecot-mysql, p-cpe:/a:rocky:linux:dovecot-mysql-debuginfo, p-cpe:/a:rocky:linux:dovecot-pgsql, p-cpe:/a:rocky:linux:dovecot-pgsql-debuginfo, p-cpe:/a:rocky:linux:dovecot-pigeonhole, p-cpe:/a:rocky:linux:dovecot-pigeonhole-debuginfo, cpe:/o:rocky:linux:10

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/6/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2025-59032, CVE-2026-27857, CVE-2026-27858

Detections

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