CVE-2020-13938

MEDIUMEPSS 96th pctl

5.5

CVSS v3

NVD

Description

Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows

CWE-862Missing Authorization

How to fix

Remediation Available

httpdAmazon

Fixed in:0:2.4.48-2.amzn2

httpd-debuginfoAmazon

Fixed in:0:2.4.48-2.amzn2

httpd-develAmazon

Fixed in:0:2.4.48-2.amzn2

httpd-filesystemAmazon

Fixed in:0:2.4.48-2.amzn2

httpd-manualAmazon

Fixed in:0:2.4.48-2.amzn2

httpd-toolsAmazon

Fixed in:0:2.4.48-2.amzn2

mod_ldapAmazon

Fixed in:0:2.4.48-2.amzn2

mod_mdAmazon

Fixed in:0:2.4.48-2.amzn2

mod_proxy_htmlAmazon

Fixed in:1:2.4.48-2.amzn2

mod_sessionAmazon

Fixed in:0:2.4.48-2.amzn2

mod_sslAmazon

Fixed in:1:2.4.48-2.amzn2

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

11.87%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-39226	Critical	9.8	100%	KEV	Fix
CVE-2022-0543	Critical	10.0	99%	KEV	Fix
CVE-2021-21978	Critical	9.8	99%	-	Fix
CVE-2023-52163	High	8.8	97%	KEV	-
CVE-2022-1329	High	8.8	93%	-	-
CVE-2023-6875	Critical	9.8	90%	-	-

Common questions

How do I fix CVE-2020-13938?

Published advisories record a fix for 11 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-2020-13938 being actively exploited?

Not that we know of. CVE-2020-13938 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 11.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.

How severe is CVE-2020-13938?

CVE-2020-13938 has a CVSS v3 base score of 5.5, rated medium. 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-2020-13938 affect?

Published advisories record a fix for httpd (Amazon), httpd-debuginfo (Amazon), httpd-devel (Amazon), httpd-filesystem (Amazon), and 7 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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 2026-06-17.