CVE-2021-22506

KEVMicro Focus Access Manager Information Leakage Vulnerability

Description

Micro Focus Access Manager contains an information leakage vulnerability resulting from a SAML service provider redirection issue when the Assertion Consumer Service URL is used.

Advance configuration exposing Information Leakage vulnerability in Micro Focus Access Manager product, affects all versions prior to version 5.0. The vulnerability could cause information leakage.

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

PublishedMar 26, 2021

Last modifiedJun 17, 2026

Added to KEVNov 3, 2021

Remediation dueNov 17, 2021

References

microfocus.com/documentation/access-manager/5.0/accessmanager50-release-notes/accessmanager50-release-notes.htmlRelease Notes
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22506US Government Resource

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Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1805 days
CVSS: 7.5 HIGH
EPSS (30-day exploit probability): 25.7% · top 2% of all CVEs
Weakness: NVD-CWE-noinfo
Attack vector: Network, remotely reachable
Preconditions: No privileges and no user interaction

Recommended actions

1.Apply updates per vendor instructions.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.