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Fixed

LIN1021-19838 : Security Advisory - apache2 - CVE-2025-55753

Created: Dec 8, 2025 Updated: Jun 8, 2026

Resolved Date: Jun 8, 2026

Found In Version: 10.21.20.1

Fix Version: 10.21.20.27

Severity: Standard

Applicable for: Wind River Linux LTS 21

Component/s: Userspace

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.[EOL][EOL]This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.[EOL][EOL][EOL]Users are recommended to upgrade to version 2.4.66, which fixes the issue.

CVEs

CVE-2025-55753