CyberSecBulletin
CVE-2025-27459NVD status: Analyzed

Endress+Hauser MEAC300-FNADE4: Storing Passwords in a Recoverable Format

Published Updated By the CyberSecBulletin desk

CVE-2025-27459 is a high-severity storing passwords in a recoverable format vulnerability in Endress+Hauser MEAC300-FNADE4 from Endress+Hauser, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Endress+Hauser MEAC300-FNADE4 versions: vers:all/*. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.24% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of Endress+Hauser MEAC300-FNADE4 you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on sick.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
Endress+HauserEndress+Hauser MEAC300-FNADE4vers:all/*Not stated
EndressMeac300-fnade4 FirmwareNot specified in the recordNot stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.14.4MediumCNA (sick.de)
CVSS 3.17.5HighNVD

Official description

The VNC application stores its passwords encrypted within the registry but uses DES for encryption. As DES is broken, the original passwords can be recovered.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Storing Passwords in a Recoverable Format

The storage of passwords in a recoverable format makes them subject to password reuse attacks by malicious users. In fact, it should be noted that recoverable encrypted passwords provide no significant benefit over plaintext passwords since they are subject not only to reuse by malicious attackers but also by malicious insiders. If a system administrator can recover a password directly, or use a brute force search on the available information, the administrator can use the password on other accounts.

How developers prevent this class of flaw

  • Use strong, non-reversible encryption to protect stored passwords.

More Storing Passwords in a Recoverable Format vulnerabilities (CWE-257)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Advisories

Other references

Other vulnerabilities in Endress+Hauser MEAC300-FNADE4

All Endress+Hauser MEAC300-FNADE4 vulnerabilities

Recent Storing Passwords in a Recoverable Format vulnerabilities

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