CVE-2020-9523Network attack vector

Credential-hash exposure via UNC path navigation

Published Apr 17, 2020 · Updated Aug 4, 2024

UNC path navigation in Micro Focus Enterprise Server before 4.0 Patch Update 16 and 5.0 Patch Update 6 allows attackers to expose MFDS account hashes. The affected MFDS component, including the copy bundled with Enterprise Developer, navigates a supplied UNC path and sends its service account's hashed credentials to an arbitrary site. Low-privileged access is required, and the disclosed consequence is credential-hash exposure rather than direct plaintext-password disclosure.

CVSS severity8.8
High
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UNC path navigation in Micro Focus Enterprise Server before 4.0 Patch Update 16 and 5.0 Patch Update 6 allows attackers to expose MFDS account hashes. The affected MFDS component, including the copy bundled with Enterprise Developer, navigates a supplied UNC path and sends its service account's hashed credentials to an arbitrary site. Low-privileged access is required, and the disclosed consequence is credential-hash exposure rather than direct plaintext-password disclosure.

The record

CVE
CVE-2020-9523
Published
Apr 17, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-522, T1187
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.0Micro FocusAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8Micro FocusCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1187Forced Authentication

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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