CVE-2022-28321

Name: CVE-2022-28321
Creator: NVD / NIST
Published: 2022-09-19T22:15:10.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2022-28321 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.19%

63.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux-Pam	Linux-Pam	< 1.5.2-6.1

References

http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/Patch, Vendor Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1197654Issue Tracking, Patch, Vendor Advisory
https://www.suse.com/security/cve/CVE-2022-28321.htmlVendor Advisory
http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/Patch, Vendor Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1197654Issue Tracking, Patch, Vendor Advisory
https://www.suse.com/security/cve/CVE-2022-28321.htmlVendor Advisory

Timeline

Published: Sep 19, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-28321?

How severe is CVE-2022-28321?

CVE-2022-28321 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2022-28321?

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-2022-28321?

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

Scan your code now

Source: NVD / NIST