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ExploitedIn CISA KEVFix available

CVE-2021-22506

Exploitation confirmed. First attested on 2021-11-03 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2021-03-26
  • Fixed in5.0

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-03-2614:15CVE publishedNVD
  2. 2021-11-03Added to the CISA KEV catalogCISA KEV
  3. 2021-11-03Listed as exploited by GCVEGCVE
  4. 2021-11-03Exploitation first reportedCISA KEV
  5. 2025-02-0620:51SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-22506?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22506?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microfocus access manager
BranchAffectedFixed in
5.0< 5.05.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As microfocus, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Access Manager.
    Affected
    • = All version prior version 5.0.no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-03-26

Fix

  1. Update Microfocus access manager to 5.0
  2. CISA’s required action: Apply updates per vendor instructions.due 2021-11-17

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2021-11-03
Patch Due Date
2021-11-17
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-03-26
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-c5q3-mm7r-f42w

Frequently asked questions

What is CVE-2021-22506?

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.

Is CVE-2021-22506 actively exploited?

Yes. CVE-2021-22506 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2021-11-17.

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

CVE-2021-22506 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record