HOMEVULNERABILITIESCVE-2022-28321
CRITICAL

CVE-2022-28321

CWE-287Published: September 19, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-28321 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
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

Affected Vendors & Products

linux-pam1 product(s)
linux-pam
openSUSE1 product(s)
tumbleweed
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/
PATCHhttps://bugzilla.suse.com/show_bug.cgi?id=1197654
PATCHhttp://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/
PATCHhttps://bugzilla.suse.com/show_bug.cgi?id=1197654
ADVISORYhttps://www.suse.com/security/cve/CVE-2022-28321.html
ADVISORYhttps://www.suse.com/security/cve/CVE-2022-28321.html

All References (6)

→
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

Quick Facts

CVE IDCVE-2022-28321
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-287
CISA KEVNo
Affected2 vendor(s)
PublishedSep 19, 2022

Related CVEs (CWE-287)

CVE-2026-41679
10.0
CVE-2013-7282
10.0
CVE-2010-4232
10.0
CVE-2026-20127
KEV10.0
CVE-2011-1519
10.0
CVE-2004-1760
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-28321 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2022-28321·NVD