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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2025-53020

CVE-2025-53020

HIGH7.5

Apache HTTP Server: HTTP/2 DoS by Memory Increase

Published Jul 10, 2025

Modified 4 months ago

Details

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.

References

http://www.openwall.com/lists/oss-security/2025/07/10/10

https://httpd.apache.org/security/vulnerabilities_24.html

https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html

https://www.cve.org/CVERecord?id=CVE-2025-53020

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

Resource Management

Ecosystems

Timeline

PublishedJul 10, 2025

ModifiedNov 4, 2025

CVE-2025-53020 | Mondoo Vulnerability Intelligence