CVE-2022-28321

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-09-20. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
66.6%
KEV
Not listed

Published

September 19, 2022

Last Modified

May 29, 2025

Advisory Details (3)

Auto-updated Jun 6, 2026
No patch confirmed yet.
generic

CVE-2022-28321 Common Vulnerabilities and Exposures | SUSE

https://www.suse.com/security/cve/CVE-2022-28321.html
generic

1197654 – VUL-0: CVE-2022-28321: pam: access denial bypass in pam_access.so

https://bugzilla.suse.com/show_bug.cgi?id=1197654
generic

/source/distribution/openSUSE-current/repo/oss/src - openSUSE Download

http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibpam0g (1.1.8-3.2ubuntu2.3+esm4) @ xenial2026-05-25ubuntu
ubuntulibpam0g (1.1.8-1ubuntu2.2+esm1) @ trusty2026-05-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-07-24 14:15 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-28321?
CVE-2022-28321 is a critical vulnerability published on September 19, 2022. 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…
When was CVE-2022-28321 disclosed?
CVE-2022-28321 was first published in the National Vulnerability Database on September 19, 2022, with the most recent update on May 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-28321 actively exploited?
CVE-2022-28321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-28321?
CVE-2022-28321 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-28321?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-28321, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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