PatchSiren

PatchSiren cyber security CVE debrief

CVE-2021-22506 Micro Focus CVE debrief

CVE-2021-22506 is an information leakage vulnerability affecting Micro Focus Access Manager. CISA added it to the Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03, which means it is treated as a known-exploited issue and should be prioritized for remediation. The supplied source corpus does not provide a CVSS score or additional technical specifics, so the most reliable defensive guidance is to follow vendor update instructions and confirm the affected deployment has been remediated.

Vendor
Micro Focus
Product
Micro Focus Access Manager
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Administrators and security teams responsible for Micro Focus Access Manager deployments should treat this as a priority issue, especially if the product is internet-facing or supports authentication workflows.

Technical summary

The available official records identify CVE-2021-22506 as an information leakage vulnerability in Micro Focus Access Manager. CISA’s KEV entry, published on 2021-11-03, records the issue as known exploited and directs users to apply updates per vendor instructions. No CVSS score or deeper exploit detail is provided in the supplied corpus.

Defensive priority

High. KEV inclusion indicates known exploitation, and the remediation timeline in CISA’s catalog set a due date of 2021-11-17 for action. Prioritize patching and validation over routine maintenance work.

Recommended defensive actions

  • Apply the vendor’s updates or remediation steps for Micro Focus Access Manager as soon as possible.
  • Confirm which Access Manager instances and versions are deployed in your environment.
  • Verify that remediation was completed before or by the KEV due date if you are reviewing historical exposure, and immediately if the product is still present without the fix.
  • Track CISA KEV and vendor advisories for any follow-on guidance related to this issue.

Evidence notes

This debrief is based only on the supplied official records: the CVE entry, NVD detail page, and CISA KEV catalog/source item. The corpus identifies the issue as an information leakage vulnerability in Micro Focus Access Manager and confirms KEV listing on 2021-11-03 with the instruction to apply updates per vendor instructions. The supplied corpus does not include CVSS, exploit chain details, or version ranges.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-22506 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-22506

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-22506 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-22506

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.