Improper input validation in Siemens Simatic Drive Controller Cpu 1504d Tf
CVE-2021-44695
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.
EPSS: 0.007 (49.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Simatic Drive Controller Cpu 1504d Tf — versions All versions < V2.9.7
- Siemens Simatic Drive Controller Cpu 1507d Tf — versions All versions < V2.9.7
- Siemens Simatic_et_200_sp_open_controller_cpu_1515sp_pc
- Siemens Simatic Et 200sp Open Controller Cpu 1515sp Pc2 (Incl. Siplus Variants) — versions All versions < V21.9.7
- Siemens Simatic_et_200_sp_open_controller_cpu_1515sp_pc_firmware
- Siemens Simatic_s7-1200_cpu_1211c
- Siemens Simatic_s7-1200_cpu_1211c_firmware
- Siemens Simatic_s7-1200_cpu_12_1211c
- Siemens Simatic_s7-1200_cpu_12_1211c_firmware
- Siemens Simatic_s7-1200_cpu_12_1212c
Weakness classification (CWE)
References
- productcert@siemens.com (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-44695?
- CVE-2021-44695 is a medium-severity vulnerability in Siemens Simatic Drive Controller Cpu 1504d Tf, classified under CWE-1286. CVSS score: 4.9/10. Published 2022-12-13.
- How severe is CVE-2021-44695?
- Medium severity. CVSS v3 base score is 4.9 out of 10.