CVE-2025-27459

VNC password disclosure via reversible registry encryption

Published Jul 3, 2025 · Updated Jul 3, 2025

Recoverable password storage in the VNC application in Endress+Hauser MEAC300-FNADE4 allows local users to recover VNC passwords. The application writes VNC passwords to the Windows registry after DES encryption, leaving the stored ciphertext reversible. High-privilege local access is required to reach the registry values; recovery exposes VNC authentication secrets without affecting integrity or availability.

CVSS severity4.4
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Recoverable password storage in the VNC application in Endress+Hauser MEAC300-FNADE4 allows local users to recover VNC passwords. The application writes VNC passwords to the Windows registry after DES encryption, leaving the stored ciphertext reversible. High-privilege local access is required to reach the registry values; recovery exposes VNC authentication secrets without affecting integrity or availability.

The record

CVE
CVE-2025-27459
Published
Jul 3, 2025
Updated
Jul 3, 2025
Vendor
Endress+Hauser
Product
MEAC300
Classifications
CWE-257, T1552.002
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=vers:all/*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Endress+Hauser · MEAC300version=vers:all/*

Published CVSS scores

4.4SICK AGCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-257Storing Passwords in a Recoverable Format
T1552.002Unsecured Credentials: Credentials in Registry

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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