CVE-2022-38755 — A vulnerability has been identified in Micro Focus Filr in versions prior to 4

A vulnerability has been identified in Micro Focus Filr in versions prior to 4.3.1.1. The vulnerability could be exploited to allow a remote unauthenticated attacker to enumerate valid users of the system. Remote unauthenticated user enumeration. This issue affects: Micro Focus F

01What is this vulnerability?

A vulnerability has been identified in Micro Focus Filr in versions prior to 4.3.1.1. The vulnerability could be exploited to allow a remote unauthenticated attacker to enumerate valid users of the system. Remote unauthenticated user enumeration. This issue affects: Micro Focus Filr versions prior to 4.3.1.1.

02Affected products

Vendor	Product	Versions
Micro Focus	Micro Focus Filr	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-11-21T00:00:00.000Z
• Last modified: 2025-04-29T20:32:05.723Z

09References

• portal.microfocus.com — https://portal.microfocus.com/s/article/KM000011886?language=en_US