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:11 | apache2 | *, 2.4.62-3, 2.4.62-5 |
| Debian:13 | apache2 | 2.4.65-3, 2.4.66-1, 2.4.66-1 |
| Debian:12 | apache2 | 2.4.62-1~deb12u1, 2.4.62-1~deb12u2, 2.4.62-2 |
| Debian:14 | apache2 | 2.4.65-3, 2.4.66-1~deb12u1, 2.4.66-1~deb13u1 |
Exploit Intelligence
- cve_db.json (github-poc)
- seen_cves.json (github-poc)
- macos_v2_generated.go (github-poc)
- macos_v1_generated.go (github-poc)
Timeline
- Dec 5, 2025 CVE Published
- Apr 28, 2026 CVE Updated