CVE-2021-44224: Apache Software Foundation Apache HTTP Server

Affected products, as the CNA wrote them
Vendor	Product	Versions
Apache Software Foundation	Apache HTTP Server	affected 2.4.7 to before Apache HTTP Server 2.4* custom

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.82, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 20 Dec 2021. New records show when each source confirmed them.

Sources

References from the CNA

httpd.apache.org/security/vulnerabilities_24.html
www.openwall.com/lists/oss-security/2021/12/20/3 mailing-listmlist
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH/ vendor-advisoryfedora
www.debian.org/security/2022/dsa-5035 vendor-advisorydebian
www.oracle.com/security-alerts/cpujan2022.html
security.netapp.com/advisory/ntap-20211224-0001/ confirm
www.tenable.com/security/tns-2022-01 confirm
www.tenable.com/security/tns-2022-03 confirm
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/ vendor-advisoryfedora
www.oracle.com/security-alerts/cpuapr2022.html
support.apple.com/kb/HT213257 confirm
support.apple.com/kb/HT213256 confirm
support.apple.com/kb/HT213255 confirm
seclists.org/fulldisclosure/2022/May/33 mailing-listfulldisc
seclists.org/fulldisclosure/2022/May/35 mailing-listfulldisc
seclists.org/fulldisclosure/2022/May/38 mailing-listfulldisc
security.gentoo.org/glsa/202208-20 vendor-advisorygentoo

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.