Is CVE-2022-22720 in the CISA KEV catalog?

No. CVE-2022-22720 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-22720?

CVE-2022-22720 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-22720?

CVE-2022-22720 has an EPSS score of 28.19% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-22720?

Upgrade apache2 on debian 11 to 2.4.53-1~deb11u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2022-22720

CRITICALEPSS 98th pctl

9.8

CVSS v3

NVD

Description

Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling

CWE-444

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.53-1~deb11u1CVE-2022-22720

Fixed in:2.4.53-1CVE-2022-22720

apache2Ubuntu

Fixed in:2.4.7-1ubuntu4.22+esm4USN-5333-2

Fixed in:2.4.18-2ubuntu3.17+esm5USN-5333-2

Fixed in:2.4.29-1ubuntu4.22USN-5333-1

Fixed in:2.4.41-4ubuntu3.10USN-5333-1

apache2-binUbuntu

Fixed in:2.4.7-1ubuntu4.22+esm4USN-5333-2

Fixed in:2.4.18-2ubuntu3.17+esm5USN-5333-2

Fixed in:2.4.29-1ubuntu4.22USN-5333-1

Fixed in:2.4.41-4ubuntu3.10USN-5333-1

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

28.19%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch1

oracle.com

Vendor Advisory1

httpd.apache.org

Third-Party Advisory11

Other references3

Related Vulnerabilities

Other CWE-444 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-22536	Critical	10.0	98%	KEV	-
CVE-2025-61884	High	7.5	98%	KEV + Ransom	-
CVE-2020-9490	High	7.5	90%	-	Fix
CVE-2023-41265	Critical	9.6	85%	KEV + Ransom	-
CVE-2023-25690	Critical	9.8	84%	-	Fix
CVE-2022-32214	Medium	6.5	81%	-	Fix

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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 2024-11-21.