Security Advisory

CVE-2025-55753

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-05 10:12:22

Last updated 2025-12-05 19:27:31

Assigner apache

State PUBLISHED

Description

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.

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