How severe is CVE-2021-22506?

CVE-2021-22506 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2021-22506?

Affected package information for CVE-2021-22506 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2021-22506?

No fixed version has been published for CVE-2021-22506 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2021-22506 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2021-22506, including 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2021-22506?

CVE-2021-22506 has an EPSS (Exploit Prediction Scoring System) score of 10.5%, placing it in the 93th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2021-22506 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2021-22506 (Micro Focus Access Manager Information Leakage Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2021-11-17. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2021-22506?

CVE-2021-22506 affects microfocus access manager. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2021-22506 published, and has it been updated?

CVE-2021-22506 was published on March 26, 2021 and was last updated on October 27, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2021-11-03 — agencies required to remediate by 2021-11-17

CVE-2021-22506

HIGH

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.

Published

Mar 26, 2021

Updated

Oct 27, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

10.5%probability of exploitation in next 30 days

Moderate Risk93th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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.

Affected Products

1 product · 1 configurations

Application

access managermicrofocus

< 5.0

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Advance configuration exposing Information Leakage vulnerability in Micr…

cisa.govCISANov 2021

Advance configuration exposing Information Leakage vulnerability in Micr…

blogs.juniper.netAPIJun 2021

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

Is CVE-2021-22506 in your stack?

O3 detects CVE-2021-22506 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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