Integer Overflow or Wraparound Affecting apache2-utils package, versions <2.4.66-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.42% (34th percentile)

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  • Snyk IDSNYK-SLES1600-APACHE2UTILS-17125231
  • published2 Jun 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2025-55753  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 apache2-utils to version 2.4.66-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2-utils package and not the apache2-utils package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds.

This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.

Users are recommended to upgrade to version 2.4.66, which fixes the issue.

CVSS Base Scores

version 3.1