Memory Leak Affecting apache2 package, versions <2.4.41-4ubuntu3.23+esm2


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
4.58% (91st percentile)

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  • Snyk IDSNYK-UBUNTU2004-APACHE2-10721853
  • published21 Aug 2025
  • disclosed10 Jul 2025

Introduced: 10 Jul 2025

CVE-2025-53020  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 apache2 to version 2.4.41-4ubuntu3.23+esm2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2 package and not the apache2 package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.

This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63.

Users are recommended to upgrade to version 2.4.64, which fixes the issue.

CVSS Base Scores

version 3.1