Siemens SIMATIC s7-400h v6 Firmware vulnerabilities

5 CVEs affecting Siemens SIMATIC s7-400h v6 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2022-25622, published 2022-04-12.

Highest priority

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

CVE-2017-12741, published 2017-12-26. High severity, CVSS 7.5. EPSS: 3.3% chance of exploitation in the next 30 days. Specially crafted packets sent to port 161/udp could cause a denial of service condition. The affected devices must be restarted manually.
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-2018-16556, published 2018-12-13. High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days. A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400…
CVE-2021-40368, published 2022-04-12. High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days. A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), …
CVE-2022-25622, published 2022-04-12. High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days. The PROFINET (PNIO) stack, when integrated with the Interniche IP stack, improperly handles internal resources for TCP segments where the minimum TCP-Header length is less than defined. This could…