VulnerabilityModified

CVE-2025-53020

Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.

HIGH 7.5EPSS 4.80%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 4.80% probability · 91th percentile
CISA KEV: Not listed
Weakness: CWE-401
Affected: apache/http server
Source: security@apache.org

References

https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2025/07/10/10
https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.