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mod_md renewal

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Discussions about mod_md renewal on WindowsForum.com focus on the CVE-2025-55753 vulnerability in Apache HTTP Server's mod_md module. This issue involves an integer overflow in the ACME client's backoff mechanism, causing excessive certificate renewal attempts after repeated failures. The fix is included in Apache HTTP Server 2.4.66. Administrators managing automated certificate provisioning with mod_md should update to this version to prevent renewal storms and operational disruptions.
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    CVE-2025-55753: Apache mod_md backoff overflow triggers renewal storms

    A subtle integer overflow in Apache HTTP Server’s ACME integration (mod_md) can turn a sensible certificate renewal backoff into an incessant retry loop after an extended series of failures, creating sustained renewal storms and operational headaches for administrators — the issue is tracked as...
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    • Thread
    • apache httpd certificate management mod_md renewal security advisory
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    • Forum: Security Alerts
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