Denial of Service Vulnerability in Siemens SIMATIC CP 343-1 and CP 443-1 Products
CVE-2021-33737
7.5HIGH
Key Information:
- Vendor
Siemens
- Status
- Vendor
- CVE Published:
- 14 September 2021
What is CVE-2021-33737?
A security flaw exists in Siemens SIMATIC CP 343-1 and CP 443-1 products that may be exploited by sending a specially crafted packet to port 102/tcp. This attack can lead to a denial of service condition, requiring a restart of the affected devices to restore normal functionality. It affects multiple versions of SIMATIC CP 343-1, SIMATIC CP 443-1, and their various SIPLUS variants.
Affected Version(s)
SIMATIC CP 343-1 (incl. SIPLUS variants) All versions
SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) All versions
SIMATIC CP 343-1 ERPC All versions