{"id":29577,"date":"2025-12-09T06:01:14","date_gmt":"2025-12-09T06:01:14","guid":{"rendered":"http:\/\/localhost\/?p=29577"},"modified":"2025-12-09T06:01:14","modified_gmt":"2025-12-09T06:01:14","slug":"cve-2025-40820","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=29577","title":{"rendered":"CVE-2025-40820_CVE-2025-40820"},"content":{"rendered":"

{“lastseen”:””,”description”:”Affected products do not properly enforce TCP sequence number validation in specific scenarios but accept values within a broad range. This could allow an unauthenticated remote attacker e.g. to interfere with connection setup, potentially leading to a denial of service. The attack succeeds only if an attacker can inject IP packets with spoofed addresses at precisely timed moments, and it affects only TCP-based services.”,”published”:”2025-12-09T10:44:30.977Z”,”modified”:”2025-12-09T10:44:30.977Z”,”type”:”cve”,”title”:”CVE-2025-40820″,”source”:”siemens”,”references”:”https:\/\/cert-portal.siemens.com\/productcert\/html\/ssa-915282.html”,”id”:”CVE-2025-40820″,”bulletinFamily”:””,”cwe”:[“CWE-940″],”cvelist”:null,”sourceData”:”Siemens SIDOOR ATD430W 0\\nSiemens SIDOOR ATE530G COATED 0\\nSiemens SIDOOR ATE530S COATED 0\\nSiemens SIMATIC CFU DIQ 0\\nSiemens SIMATIC CFU PA 0\\nSiemens SIMATIC CFU PA 0\\nSiemens SIMATIC ET 200AL IM 157-1 PN 0\\nSiemens SIMATIC ET 200clean, CM 8x IO-Link 0\\nSiemens SIMATIC ET 200clean, DI 16x24VDC 0\\nSiemens SIMATIC ET 200clean, DIQ 16x24VDC\/0,5A 0\\nSiemens SIMATIC ET 200eco PN, AI 8xRTD\/TC, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, CM 4x IO-Link, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, DI 16x24VDC, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, DI 8x24VDC, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, DIQ 16x24VDC\/2A, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, DQ 8x24VDC\/0,5A, M12-L V5.1.1\\nSiemens SIMATIC ET 200eco PN, DQ 8x24VDC\/2A, M12-L V5.1.1\\nSiemens SIMATIC ET 200MP IM 155-5 PN HF V4.2.0\\nSiemens SIMATIC ET 200pro IM 154-8 PN\/DP CPU 0\\nSiemens SIMATIC ET 200pro IM 154-8F PN\/DP CPU 0\\nSiemens SIMATIC ET 200pro IM 154-8FX PN\/DP CPU 0\\nSiemens SIMATIC ET 200S IM 151-8 PN\/DP CPU 0\\nSiemens SIMATIC ET 200S IM 151-8F PN\/DP CPU 0\\nSiemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0\\nSiemens SIMATIC ET 200SP CPU 1510SP-1 PN 0\\nSiemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0\\nSiemens SIMATIC ET 200SP CPU 1512SP-1 PN 0\\nSiemens SIMATIC ET 200SP IM 155-6 MF HF 0\\nSiemens SIMATIC ET 200SP IM 155-6 PN HA (incl. 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{“lastseen”:””,”description”:”Affected products do not properly enforce TCP sequence number validation in specific scenarios but accept values within a broad range. 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