Detections
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Oracle Linux 10 : dovecot (ELSA-2026-79371)

critical Nessus Plugin ID 364354

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-79371 advisory.

 - fix CVE-2026-33605: ManageSieve: denial of service via lone CR character causing protocol deadlock (RHEL-251984)
 - fix CVE-2026-42007: fix use-after-free and info leak in sieve editheader extension (RHEL-251945)
 - fix CVE-2026-40018: incorrect escaping of multi-byte strings in SQL commands (RHEL-252058)
 - fix CVE-2026-42391: fix excessive memory growth with pre-login ID command (RHEL-252072)
 - fix CVE-2026-73208: OAuth2 scope check requires all configured scopes, add oauth2_audience setting (RHEL-251900)
 - fix CVE-2026-27852: limit parsed message data to prevent memory exhaustion (RHEL-251564)

Tenable has extracted the preceding description block directly from the Oracle Linux 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.

See Also

https://linux.oracle.com/errata/ELSA-2026-79371.html

Plugin Details

Severity: Critical

ID: 364354

File Name: oraclelinux_ELSA-2026-79371.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/9/2026

Updated: 10/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Percentile: 57.58

CVSS v2

Risk Factor: High

Base Score: 8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-42007

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

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

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 10/8/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-27852, CVE-2026-33263, CVE-2026-33605, CVE-2026-40018, CVE-2026-40019, CVE-2026-42007, CVE-2026-42391, CVE-2026-73208