Vulnerability in Apache Http_server
CVE-2025-53020
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.
EPSS: 0.044 (90.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Http_server
- Apache Software Foundation Http Server — versions 2.4.17
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-53020?
- CVE-2025-53020 is a high-severity vulnerability in Apache Http_server, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-07-10.
- How severe is CVE-2025-53020?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-53020 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.