CVSS 3.1
5.5 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:HCVE-2021-44694
Medium (5.5) in siemens. EPSS 0.7% chance of exploitation in the next 30 days.
Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-1287, CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- siemens:simatic_et_200_sp_open_controller_cpu_1515sp_pc_firmware
- siemens:simatic_s7-1200_cpu_1211c_firmware
- siemens:simatic_s7-1200_cpu_1212c_firmware
- siemens:simatic_s7-1200_cpu_1212fc_firmware
- siemens:simatic_s7-1200_cpu_1214_fc_firmware
- siemens:simatic_s7-1200_cpu_1214c_firmware
- siemens:simatic_s7-1200_cpu_1214fc_firmware
- siemens:simatic_s7-1200_cpu_1215_fc_firmware
- siemens:simatic_s7-1200_cpu_1215c_firmware
- siemens:simatic_s7-1200_cpu_1215fc_firmware
- siemens:simatic_s7-1200_cpu_1217c_firmware
- siemens:simatic_s7-1200_cpu_12_1211c_firmware
- siemens:simatic_s7-1200_cpu_12_1212c_firmware
- siemens:simatic_s7-1200_cpu_12_1212fc_firmware
- siemens:simatic_s7-1200_cpu_12_1214c_firmware
- siemens:simatic_s7-1200_cpu_12_1214fc_firmware
- siemens:simatic_s7-1200_cpu_12_1215c_firmware
- siemens:simatic_s7-1200_cpu_12_1215fc_firmware
- siemens:simatic_s7-1200_cpu_12_1217c_firmware
- siemens:simatic_s7-1500_cpu_1507s_f_firmware
- siemens:simatic_s7-1500_cpu_1507s_firmware
- siemens:simatic_s7-1500_cpu_1508s_f_firmware
- siemens:simatic_s7-1500_cpu_1508s_firmware
- siemens:simatic_s7-1500_cpu_1510sp-1_firmware
- siemens:simatic_s7-1500_cpu_1510sp_firmware
- siemens:simatic_s7-1500_cpu_1511-1_firmware
- siemens:simatic_s7-1500_cpu_1511-1_pn_firmware
- siemens:simatic_s7-1500_cpu_1511c-1_firmware
- siemens:simatic_s7-1500_cpu_1511c_firmware
- siemens:simatic_s7-1500_cpu_1511f-1_firmware
- siemens:simatic_s7-1500_cpu_1511f-1_pn_firmware
- siemens:simatic_s7-1500_cpu_1511t-1_firmware
- siemens:simatic_s7-1500_cpu_1511tf-1_firmware
- siemens:simatic_s7-1500_cpu_1512c-1_firmware
- siemens:simatic_s7-1500_cpu_1512c_firmware
- siemens:simatic_s7-1500_cpu_1512sp-1_firmware
- siemens:simatic_s7-1500_cpu_1512spf-1_firmware
- siemens:simatic_s7-1500_cpu_1513-1_firmware
- siemens:simatic_s7-1500_cpu_1513-1_pn_firmware
- siemens:simatic_s7-1500_cpu_1513f-1_firmware
- siemens:simatic_s7-1500_cpu_1513f-1_pn_firmware
- siemens:simatic_s7-1500_cpu_1513r-1_firmware
- siemens:simatic_s7-1500_cpu_1515-2_firmware
- siemens:simatic_s7-1500_cpu_1515-2_pn_firmware
- siemens:simatic_s7-1500_cpu_151511c-1_firmware
- siemens:simatic_s7-1500_cpu_151511f-1_firmware
- siemens:simatic_s7-1500_cpu_1515f-2_firmware
- siemens:simatic_s7-1500_cpu_1515f-2_pn_firmware
- siemens:simatic_s7-1500_cpu_1515r-2_firmware
- siemens:simatic_s7-1500_cpu_1515t-2_firmware