Detections
Analytics
Oracle Linux 7 : dovecot (ELSA-2026-26564)
medium Nessus Plugin ID 334524
Synopsis
The remote Oracle Linux host is missing one or more security updates.Description
The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-26564 advisory.- fix CVE-2020-12100 resource exhaustion via deeply nested MIME parts (#1866752)
- fix CVE-2020-12673 out of bound reads in dovecot NTLM implementation (#1866757)
- fix CVE-2020-12674 crash due to assert in RPA implementation (#1866764)
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
Plugin Details
Severity: Medium
ID: 334524
File Name: oraclelinux_ELSA-2026-26564.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 8/11/2026
Updated: 8/11/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.73
CVSS v2
Risk Factor: Medium
Base Score: 5.4
Temporal Score: 4
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2026-27856
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.2
Vector: CVSS:3.0/AV:N/AC:H/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:oracle:linux:7, 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: 8/10/2026
Vulnerability Publication Date: 3/27/2026
Reference Information
CVE: CVE-2025-59032, CVE-2026-27856, CVE-2026-27857, CVE-2026-27858