VDB
DEBIAN-CVE-2025-55753
DEBIAN-CVE-2025-55753
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | apache2 | 0, 2.4.65-2, 2.4.65-3 |
| Debian:12 | apache2 | 0, 2.4.57-2, 2.4.57-3 |
| Debian:14 | apache2 | 0, 2.4.65-2, 2.4.65-3 |
Timeline
- Dec 5, 2025 CVE Published
- Oct 23, 2026 CVE Updated