Vulnerabilities > CVE-2020-15787 - Authentication Bypass by Primary Weakness vulnerability in Siemens Simatic HMI United Comfort Panels Firmware

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
siemens
CWE-305
critical

Summary

A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.

Vulnerable Configurations

Part Description Count
OS
Siemens
1
Hardware
Siemens
1

Common Weakness Enumeration (CWE)