CVE & CISA-KEV Catalog

CVE-2025-53020

HIGHEPSS 92th pctl

7.5

CVSS v3

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.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.65-1~deb12u1CVE-2025-53020

Fixed in:2.4.64-1CVE-2025-53020

Fixed in:2.4.64-1CVE-2025-53020

httpdRed Hat / RHEL

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.src::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.src::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

httpdRocky

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.src::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.src::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.src::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

httpd-debuginfoRocky

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

httpd-debuginfoRed Hat / RHEL

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

httpd-debugsourceRed Hat / RHEL

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

httpd-debugsourceRocky

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

httpd-develRed Hat / RHEL

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

httpd-develRocky

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

httpd-filesystemRocky

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.noarch::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.noarch::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.noarch::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch::httpd:2.4RHSA-2026:36373

httpd-filesystemRed Hat / RHEL

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.noarch::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.noarch::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.noarch::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch::httpd:2.4RHSA-2026:36373

httpd-manualRocky

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.noarch::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.noarch::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.noarch::httpd:2.4RHSA-2026:36831

httpd-manualRed Hat / RHEL

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.noarch::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.noarch::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.noarch::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.noarch::httpd:2.4RHSA-2026:36373

httpd-toolsRed Hat / RHEL

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

httpd-toolsRocky

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

httpd-tools-debuginfoRocky

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

httpd-tools-debuginfoRed Hat / RHEL

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.ppc64le::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.s390x::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.aarch64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-65.module+el8.10.0+24281+ea10630c.8.x86_64::httpd:2.4RHSA-2026:22140

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.x86_64::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-47.module+el8.6.0+24496+af8fe930.13.x86_64::httpd:2.4RHSA-2026:36831

Fixed in:0:2.4.37-56.module+el8.8.0+24497+e470c0e2.12.ppc64le::httpd:2.4RHSA-2026:36373

Fixed in:0:2.4.37-39.module+el8.4.0+24495+1afced82.12.x86_64::httpd:2.4RHSA-2026:36846

jbcs-httpd24-httpdRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpdRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-debuginfoRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-debuginfoRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-develRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-develRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-manualRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-manualRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-selinuxRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-selinuxRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-toolsRocky

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-toolsRed Hat / RHEL

Fixed in:0:2.4.62-13.el7jbcsRHSA-2026:27200

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

jbcs-httpd24-httpd-tools-debuginfoRocky

Fixed in:0:2.4.62-13.el8jbcsRHSA-2026:27200

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.91%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Vendor Advisory1

httpd.apache.org

Other references2

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13934	High	7.5	64%	-	Fix
CVE-2016-6304	High	7.5	63%	-	Fix
CVE-2019-12265	Medium	5.3	60%	-	Fix
CVE-2001-0136	Medium	5.0	45%	-	-
CVE-2016-4232	High	7.5	36%	-	-
CVE-2001-0543	Medium	5.0	19%	-	-

Common questions

How do I fix CVE-2025-53020?

Published advisories record a fix for 107 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2025-53020 being actively exploited?

Not that we know of. CVE-2025-53020 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 4.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 92% of all scored CVEs.

How severe is CVE-2025-53020?

CVE-2025-53020 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-53020 affect?

Published advisories record a fix for apache2 (Debian), httpd (Red Hat / RHEL), httpd (Rocky), httpd-debuginfo (Rocky), and 103 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2025-53020

Markdown

[![CVE-2025-53020](https://tridentstack.com/cve/badge/CVE-2025-53020.svg)](https://tridentstack.com/cve/CVE-2025-53020)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-53020"><img src="https://tridentstack.com/cve/badge/CVE-2025-53020.svg" alt="CVE-2025-53020"></a>

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.