CVE-2026-40013 Affecting dovecot24-backend-pgsql package, versions <2.4.4-160000.2.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.87% (58th percentile)

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  • Snyk IDSNYK-SLES1600-DOVECOT24BACKENDPGSQL-20262217
  • published29 Sept 2026
  • disclosed1 Sept 2026

Introduced: 1 Sep 2026

CVE-2026-40013  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 dovecot24-backend-pgsql to version 2.4.4-160000.2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dovecot24-backend-pgsql package and not the dovecot24-backend-pgsql package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script. This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for script management. This might be able to be used for remote code execution. Disable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version. No publicly available exploits are known.

CVSS Base Scores

version 3.1