{"id":"CVE-2023-28831","state":"PUBLISHED","title":"The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during cert","description":"The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation.\r\n\r\nThis could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.","publishedAt":"2023-09-12T09:32:06.153Z","updatedAt":"2025-11-11T20:20:09.380Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"siemens"},"assigner":"siemens","products":["Siemens SIMATIC BRAUMAT","Siemens SIMATIC Cloud Connect 7 CC712","Siemens SIMATIC Cloud Connect 7 CC716","Siemens SIMATIC Comfort/Mobile RT","Siemens SIMATIC Drive Controller CPU 1504D TF","Siemens SIMATIC Drive Controller CPU 1507D TF","Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN","Siemens SIMATIC ET 200SP CPU 1510SP-1 PN","Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN","Siemens SIMATIC ET 200SP CPU 1512SP-1 PN","Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN","Siemens SIMATIC ET 200SP CPU 1514SP-2 PN","Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN","Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN","Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. 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