CVE-2022-30556

Name: CVE-2022-30556
Creator: NVD / NIST
Published: 2022-06-09T17:15:09.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.69%

Last modified Jun 17, 2026

CVE-2022-30556 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 4.69% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

4.69%

90.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Apache	Http Server	< 2.4.54
Netapp	Clustered Data Ontap	All versions
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36

References

http://www.openwall.com/lists/oss-security/2022/06/08/7Mailing List, Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/Third Party Advisory
https://security.gentoo.org/glsa/202208-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220624-0005/Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/06/08/7Mailing List, Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/Third Party Advisory
https://security.gentoo.org/glsa/202208-20Third Party Advisory
https://security.netapp.com/advisory/ntap-20220624-0005/Third Party Advisory

Timeline

Published: Jun 9, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-30556?

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.

How severe is CVE-2022-30556?

CVE-2022-30556 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.69% probability of exploitation in the next 30 days.

How do I fix CVE-2022-30556?

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-2022-30556?

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

Scan your code now

Source: NVD / NIST