{"id":86614,"date":"2026-03-05T15:38:38","date_gmt":"2026-03-05T15:38:38","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-53020-late-release-of-memory-after-effective-lifetime-vulnerability-in-apache-http-server","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53020-late-release-of-memory-after-effective-lifetime-vulnerability-in-apache-http-server\/","title":{"rendered":"CVE-2025-53020: Late Release of Memory after Effective Lifetime Vulnerability in Apache HTTP Server<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-53020 represents a significant vulnerability in the Apache HTTP Server, affecting versions from 2.4.17 to 2.4.63. This vulnerability could potentially allow malicious actors to compromise systems or lead to data leakage. As Apache HTTP Server is widely used, the impact of this vulnerability is broad in scale, underscoring the urgency of addressing it in a timely manner.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-53020
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Apache HTTP Server | 2.4.17 to 2.4.63<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability exists due to the improper handling of memory in Apache HTTP Server, specifically a late release of memory after its effective lifetime. This can allow an attacker to manipulate this released memory, executing arbitrary code which could lead to system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of how this vulnerability might be exploited. In this case, a malicious HTTP request is sent to the server, exploiting the vulnerability:<\/p>\n

POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"malicious_payload\": \"exploit(memory_address)\" }<\/code><\/pre>\n
Upon receipt of this request, the server may process it in a way that triggers the late release of memory, allowing the malicious payload to exploit this vulnerability.<\/p>\n
Recommended Mitigation<\/strong><\/p>\n
Users are advised to upgrade to Apache HTTP Server version 2.4.64, which contains a fix for this vulnerability. As a temporary mitigation, users can apply a vendor patch or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS). However, these are temporary measures and users should plan to upgrade as soon as possible to ensure long-term security.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-53020 represents a significant vulnerability in the Apache HTTP Server, affecting versions from 2.4.17 to 2.4.63. This vulnerability could potentially allow malicious actors to compromise systems or lead to data leakage. As Apache HTTP Server is widely used, the impact of this vulnerability is broad in scale, underscoring the urgency of addressing it in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86614","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t