Siemens SIMATIC s7-1200 CPU Firmware vulnerabilities

3 CVEs affecting Siemens SIMATIC s7-1200 CPU Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-28831, published 2023-09-12.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2019-10936, published 2019-10-10. High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days. Affected devices improperly handle large amounts of specially crafted UDP packets. This could allow an unauthenticated remote attacker to trigger a denial of service condition.
CVE-2023-28831, published 2023-09-12. High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days. 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…
CVE-2021-37172, published 2021-08-10. High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days. A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA…