CVE-2025-53020
HIGH7.5EPSS 3.4%Apache HTTP Server: HTTP/2 DoS by Memory Increase
Published: 7/10/2025Modified: 4/28/2026
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.
Affected packages (3)
- Alpine/apache2from 0, < 2.4.64-r0
- Bitnami/apache>= 2.4.17, < 2.4.64
- Debian/apache2from 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 |
References (6)
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2025-53020
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-53020
- WEBhttps://httpd.apache.org/security/vulnerabilities_24.html
- WEBhttps://lists.debian.org/debian-lts-announce/2025/08/msg00009.html
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2025-53020
- WEBhttp://www.openwall.com/lists/oss-security/2025/07/10/10