CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2019-18336
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.
Severity
- EPSS
- 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- siemens:simatic_s7-300_cpu_312_ifm_firmware
- siemens:simatic_s7-300_cpu_313_firmware
- siemens:simatic_s7-300_cpu_314_firmware
- siemens:simatic_s7-300_cpu_314_ifm_firmware
- siemens:simatic_s7-300_cpu_315-2_dp_firmware
- siemens:simatic_s7-300_cpu_315_firmware
- siemens:simatic_s7-300_cpu_316-2_dp_firmware
- siemens:simatic_s7-300_cpu_318-2_firmware
- siemens:simatic_s7-300_cpu_firmware
- siemens:simatic_tdc_cp51m1_firmware
- siemens:simatic_tdc_cpu555_firmware
- siemens:sinumerik_840d_sl