Is CVE-2022-4900 in the CISA KEV catalog?

No. CVE-2022-4900 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-4900?

CVE-2022-4900 has a CVSS v3 base score of 6.2 (MEDIUM).

What is the EPSS score for CVE-2022-4900?

CVE-2022-4900 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-4900?

Upgrade php7.4 on debian 11 to 7.4.33-1+deb11u6 or later. Fixes are available for 31 affected products.

CVE & CISA-KEV Catalog

CVE-2022-4900

MEDIUM

6.2

CVSS v3

NVD

Description

A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow.

CWE-119Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

php7.4Debian

Fixed in:7.4.33-1+deb11u6CVE-2022-4900

libapache2-mod-php7.0Ubuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

libapache2-mod-php7.2Ubuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

libapache2-mod-php7.4Ubuntu

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

libapache2-mod-php8.1Ubuntu

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

libapache2-mod-php8.2Ubuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

php7.0Ubuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

php7.0-cgiUbuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

php7.0-cliUbuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

php7.0-fpmUbuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

php7.0-xmlUbuntu

Fixed in:7.0.33-0ubuntu0.16.04.16+esm9USN-6757-1

php7.2Ubuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

php7.2-cgiUbuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

php7.2-cliUbuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

php7.2-fpmUbuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

php7.2-xmlUbuntu

Fixed in:7.2.24-0ubuntu0.18.04.17+esm3USN-6757-1

php7.4Ubuntu

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

php7.4-cgiUbuntu

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

php7.4-cliUbuntu

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

php7.4-fpmUbuntu

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

php7.4-xmlUbuntu

Fixed in:7.4.3-4ubuntu2.22USN-6757-2

Fixed in:7.4.3-4ubuntu2.21USN-6757-1

php8.1Ubuntu

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

php8.1-cgiUbuntu

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

php8.1-cliUbuntu

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

php8.1-fpmUbuntu

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

php8.1-xmlUbuntu

Fixed in:8.1.2-1ubuntu2.16USN-6757-1

Fixed in:8.1.2-1ubuntu2.17USN-6757-2

php8.2Ubuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

php8.2-cgiUbuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

php8.2-cliUbuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

php8.2-fpmUbuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

php8.2-xmlUbuntu

Fixed in:8.2.10-2ubuntu2.1USN-6757-2

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory1

access.redhat.com

Third-Party Advisory1

security.netapp.com

Issue Tracking1

bugzilla.redhat.com

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2025-11-03.