CVE-2025-53020

high

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.

References

https://httpd.apache.org/security/vulnerabilities_24.html

https://www.securityweek.com/http-2-bomb-exploit-knocks-web-servers-offline-in-seconds/

https://thehackernews.com/2026/06/new-http2-bomb-vulnerability-allows.html

https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html

http://www.openwall.com/lists/oss-security/2025/07/10/10

Details

Source: Mitre, NVD

Published: 2025-07-10

Updated: 2025-11-04

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H