Late Memory Release Vulnerability in Apache HTTP Server
CVE-2025-53020

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Http Server
Vendor
CVE Published:
10 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-53020?

The Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server signifies a flaw that can lead to potential memory management issues. Affected versions ranging from 2.4.17 to 2.4.63 may not properly release memory after its intended use, possibly allowing for resource exhaustion. To mitigate this vulnerability, users are advised to upgrade to version 2.4.64, which addresses the issue effectively. For further details and best practices, refer to the vendor's advisory on securing their web server.

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Affected Version(s)

Apache HTTP Server 2.4.17 <= 2.4.63

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-53020-PoC
Created by galbarnahum

References

https://httpd.apache.org/security/vulnerabilities_24.html
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gal Bar Nahum
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