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CVE-2025-27458

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CVE-2025-27458

Published: Jul 3, 2025

Modified: Jul 3, 2025

PUBLISHED

CVSS v3.1

6.5

MEDIUM

Description

The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses match it is prooven that the client knows the correct password. Since all VNC communication is unencrypted, an attacker can obtain the challenge and response and try to derive the password from this information.

VendorProductVersions

Endress+Hauser

Endress+Hauser MEAC300-FNADE4

affected
vers:all/*

Weaknesses (CWE)

CWE-327

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

https://www.endress.com
x_Endress+Hauser
https://sick.com/psirt
x_SICK PSIRT Security Advisories
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
x_ICS-CERT recommended practices on Industrial Security
https://sick.com/psirt
vendor-advisory

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