CVE-2021-37206: siemens siprotec 5 relays with cpu variants cp050 Improper Input Validation

Vulnerability summary

CVE-2021-37206 is a high (CVSS 7.5) Improper Input Validation vulnerability in siemens siprotec 5 relays with cpu variants cp050. EPSS estimates a 1.43% chance of exploitation in the next 30 days, higher than 72.8% of scored vulnerabilities.

Timeline

1. 14-09-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Received webpackets are not properly processed. An unauthenticated remote attacker with access to any of the Ethernet interfaces could send specially crafted packets to force a restart of the target device.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.