Denial of Service Vulnerability in Siemens Devices
CVE-2021-40365

7.5HIGH

Key Information:

Vendor

Siemens
Status
Simatic Drive Controller Cpu 1504d Tf
Simatic Drive Controller Cpu 1507d Tf
Simatic Et 200sp Open Controller Cpu 1515sp Pc2 (incl. Siplus Variants)
Simatic S7-1200 Cpu Family (incl. Siplus Variants)
Vendor
CVE Published:
13 December 2022

What is CVE-2021-40365?

This vulnerability involves the improper processing of specially crafted packets sent to port 102/tcp in Siemens devices, which can lead to a denial of service condition. Attackers may exploit this flaw to disrupt device functionality, causing service interruptions in critical operations.

Affected Version(s)

SIMATIC Drive Controller CPU 1504D TF All versions < V2.9.7

SIMATIC Drive Controller CPU 1507D TF All versions < V2.9.7

SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) All versions < V21.9.7

References

https://cert-portal.siemens.com/productcert/pdf/ssa-38265...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.