Resource exhaustion in Siemens Simatic Net Cp 343-1 Advanced

CVE-2020-25242

A vulnerability has been identified in SIMATIC NET CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Standard (incl. SIPLUS variants) (All versions). Specially crafted packets sent to TCP port 102 could cause a Denial-of-Service condition on the affected devices. A cold restart might be necessary in order to recover.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.013 (66.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-25242?
CVE-2020-25242 is a high-severity vulnerability in Siemens Simatic Net Cp 343-1 Advanced, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-05-12.
How severe is CVE-2020-25242?
High severity. CVSS v3 base score is 7.5 out of 10.