Vulnerability Details CVE-2021-33737
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 45.8%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.8
References
Products affected by CVE-2021-33737
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cpe:2.3:h:siemens:simatic_cp343-1:-
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cpe:2.3:h:siemens:simatic_cp343-1_advanced:-
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cpe:2.3:h:siemens:simatic_cp_343-1_erpc:-
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cpe:2.3:h:siemens:simatic_cp_343-1_lean:-
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cpe:2.3:h:siemens:simatic_cp_443-1:-
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cpe:2.3:h:siemens:simatic_cp_443-1_advanced:-
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cpe:2.3:o:siemens:simatic_cp_343-1_advanced_firmware:-
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cpe:2.3:o:siemens:simatic_cp_343-1_erpc_firmware:-
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cpe:2.3:o:siemens:simatic_cp_343-1_firmware:-
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cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:-
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cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:3.1.3
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cpe:2.3:o:siemens:simatic_cp_443-1_advanced_firmware:-
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cpe:2.3:o:siemens:simatic_cp_443-1_advanced_firmware:3.3
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cpe:2.3:o:siemens:simatic_cp_443-1_firmware:-
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cpe:2.3:o:siemens:simatic_cp_443-1_firmware:3.3