CVE-2021-33737
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.1%
exploitation probability
1.1%top 37% of all CVEs
observed exploitation
nono source reports it
A vulnerability has been identified in 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), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C
Affected products
Siemens · SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)Siemens · SIMATIC CP 343-1 ERPCSiemens · SIMATIC CP 343-1 (incl. SIPLUS variants)Siemens · SIMATIC CP 343-1 Lean (incl. SIPLUS variants)Siemens · SIMATIC CP 443-1Siemens · SIMATIC CP 443-1 AdvancedSiemens · SIPLUS NET CP 443-1Siemens · SIPLUS NET CP 443-1 Advanced