CVE-2022-22721

CRITICALNVD 9.19.8▲

9.1

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.

CVSS v3: 9.1
EG Score: 9.8(medium)
EPSS: 94.3%
KEV: Not listed

Published

March 14, 2022

Last Modified

November 21, 2024

References (32)

security@apachehttp://seclists.org/fulldisclosure/2022/May/33
security@apachehttp://seclists.org/fulldisclosure/2022/May/35
security@apachehttp://seclists.org/fulldisclosure/2022/May/38
security@apachehttp://www.openwall.com/lists/oss-security/2022/03/14/2
security@apachehttps://httpd.apache.org/security/vulnerabilities_24.html
security@apachehttps://lists.debian.org/debian-lts-announce/2022/03/msg00033.html
security@apachehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/
security@apachehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/
security@apachehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/
security@apachehttps://security.gentoo.org/glsa/202208-20
security@apachehttps://security.netapp.com/advisory/ntap-20220321-0001/
security@apachehttps://support.apple.com/kb/HT213255
security@apachehttps://support.apple.com/kb/HT213256
security@apachehttps://support.apple.com/kb/HT213257
security@apachehttps://www.oracle.com/security-alerts/cpuapr2022.html

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	apache2-bin (2.4.48-3.1ubuntu3.3) @ impish	2026-05-26	ubuntu
ubuntu	apache2-bin (2.4.18-2ubuntu3.17+esm5) @ xenial	2026-05-26	ubuntu
redhat	jbcs-httpd24-httpd	2022-12-08	redhat
redhat	jbcs-httpd24-httpd-0:2.4.51-37.el7jbcs	2022-12-08	redhat
redhat	httpd-0:2.4.53-7.el9	2022-11-15	redhat
redhat	httpd:2.4-8070020220725152258.3b9f49c4	2022-11-08	redhat
redhat	httpd24-httpd-0:2.4.34-23.el7.5	2022-09-29	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-190Integer Overflow or Wraparound

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2022-22721?

CVE-2022-22721 is a critical vulnerability published on March 14, 2022. 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.

When was CVE-2022-22721 disclosed?

CVE-2022-22721 was first published in the National Vulnerability Database on March 14, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-22721 actively exploited?

CVE-2022-22721 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-22721?

CVE-2022-22721 has a CVSS v3 base score of 9.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2022-22721?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-22721, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-22721

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CVE-2022-22721

Published

Last Modified

References (32)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-22721?

Same vendor

Same CWE

CVE-2022-22721

📅 Published

🔄 Last Modified

🔗 References (32)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-22721?

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Frequently asked(5)

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