CVE-2025-53020
Apache HTTP Server: HTTP/2 DoS by Memory Increase
7.5
HIGH
CVSS 3.1
EPSS 2.8%
Description
Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue.
How to fix CVE-2025-53020
To remediate CVE-2025-53020, upgrade the affected package to a fixed version below.
- Alpine/apache2—upgrade to 2.4.64-r0 or later
- —upgrade to 2.4.64 or later
- —upgrade to 2.4.65-1~deb11u1 or later
Is CVE-2025-53020 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.4.64-r0
- >= 2.4.17, < 2.4.64
- from 0, < 2.4.65-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |