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Vulnerability record · CVE-2020-13938 · published 10 June 2021

CVE-2020-13938: Apache http server missing authorization vulnerability

Apache · Http Server

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

5.5 CVSS 3.1 Medium EPSS 12% · top 4.0% CWE-862 · Missing authorization
5.5CVSS 3.1 base score, v2 2.1
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://httpd.apache.org/security/vulnerabilities_24.html Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/3 Mailing ListThird Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10379 Third Party Advisory
https://lists.apache.org/thread.html/r5fdc4fbbc7ddb816c843329a9accdcf284ade86e8d77b8c2a6d9bc30%40%3Cannounce.httpd.apach
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org Mailing ListRelease NotesVendor Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/ Third Party Advisory
http://httpd.apache.org/security/vulnerabilities_24.html Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/3 Mailing ListThird Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10379 Third Party Advisory
https://lists.apache.org/thread.html/r5fdc4fbbc7ddb816c843329a9accdcf284ade86e8d77b8c2a6d9bc30%40%3Cannounce.httpd.apach
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org Mailing ListRelease NotesVendor Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-13938), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.