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CVE-2025-53020: Apache HTTP Server: HTTP/2 DoS by Memory Increase
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.
Classification
CVE ID: CVE-2025-53020
Affected Products
Vendor: Apache Software Foundation
Product: Apache HTTP Server
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.05% (scored less or equal to compared to others)
EPSS Date: 2025-07-12 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-53020https://httpd.apache.org/security/vulnerabilities_24.html