CVE-2022-22721

Name: CVE-2022-22721
Creator: NVD / NIST
Published: 2022-03-14T11:15:09.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 41.86%

Last modified Jun 17, 2026

CVE-2022-22721 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.. EPSS estimates a 41.86% chance of exploitation in the next 30 days.

Description

If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

41.86%

98.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Apache	Http Server	<= 2.4.52	—
Fedoraproject	Fedora	34	—
Fedoraproject	Fedora	35	—
Fedoraproject	Fedora	36	—
Debian	Debian Linux	9.0	—
Oracle	Enterprise Manager Ops Center	12.4.0.0	—
Oracle	Http Server	12.2.1.3.0	—
Oracle	Http Server	12.2.1.4.0	—
Oracle	Zfs Storage Appliance Kit	8.8	—
Apple	Mac Os X	>= 10.15, < 10.15.7	—
Apple	Mac Os X	10.15.7	Security Update 2020-001
Apple	Macos	>= 11.0, < 11.6.6	—
Apple	Macos	>= 12.0, < 12.4	—

References

http://seclists.org/fulldisclosure/2022/May/33Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/35Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/38Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/03/14/2Mailing List, Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00033.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/
https://security.gentoo.org/glsa/202208-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220321-0001/Third Party Advisory
https://support.apple.com/kb/HT213255Third Party Advisory
https://support.apple.com/kb/HT213256Third Party Advisory
https://support.apple.com/kb/HT213257Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2022/May/33Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/35Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/38Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/03/14/2Mailing List, Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00033.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/
https://security.gentoo.org/glsa/202208-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220321-0001/Third Party Advisory
https://support.apple.com/kb/HT213255Third Party Advisory
https://support.apple.com/kb/HT213256Third Party Advisory
https://support.apple.com/kb/HT213257Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory

Timeline

Published: Mar 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-22721?

How severe is CVE-2022-22721?

CVE-2022-22721 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 41.86% probability of exploitation in the next 30 days.

How do I fix CVE-2022-22721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-22721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST