Is CVE-2022-30556 in the CISA KEV catalog?

No. CVE-2022-30556 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-30556?

CVE-2022-30556 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-30556?

CVE-2022-30556 has an EPSS score of 4.69% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-30556?

Upgrade apache2 on debian 11 to 2.4.54-1~deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2022-30556

HIGHEPSS 91th pctl

7.5

CVSS v3

NVD

Description

Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer.

CWE-200Information Exposure

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.54-1~deb11u1CVE-2022-30556

Fixed in:2.4.54-1CVE-2022-30556

apache2Ubuntu

Fixed in:2.4.7-1ubuntu4.22+esm8USN-5487-3

Fixed in:2.4.7-1ubuntu4.22+esm5USN-5487-1

Fixed in:2.4.18-2ubuntu3.17+esm7USN-5487-3

Fixed in:2.4.18-2ubuntu3.17+esm6USN-5487-1

Fixed in:2.4.29-1ubuntu4.25USN-5487-3

Fixed in:2.4.29-1ubuntu4.24USN-5487-1

Fixed in:2.4.41-4ubuntu3.12USN-5487-1

Fixed in:2.4.52-1ubuntu4.1USN-5487-1

apache2-binUbuntu

Fixed in:2.4.7-1ubuntu4.22+esm8USN-5487-3

Fixed in:2.4.7-1ubuntu4.22+esm5USN-5487-1

Fixed in:2.4.18-2ubuntu3.17+esm6USN-5487-1

Fixed in:2.4.18-2ubuntu3.17+esm7USN-5487-3

Fixed in:2.4.29-1ubuntu4.24USN-5487-1

Fixed in:2.4.29-1ubuntu4.25USN-5487-3

Fixed in:2.4.41-4ubuntu3.12USN-5487-1

Fixed in:2.4.52-1ubuntu4.1USN-5487-1

Apache Lounge httpdWindows application

Affected:2.4.54Fixed in:2.4.54Apache Lounge

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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

4.69%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

httpd.apache.org

Third-Party Advisory5

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

Embed a live status badge for CVE-2022-30556

Markdown

[![CVE-2022-30556](https://tridentstack.com/cve/badge/CVE-2022-30556.svg)](https://tridentstack.com/cve/CVE-2022-30556)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-30556"><img src="https://tridentstack.com/cve/badge/CVE-2022-30556.svg" alt="CVE-2022-30556"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2025-05-01.