Privilege escalation in Siemens Sinamics G220
CVE-2025-40594
A vulnerability has been identified in SINAMICS G220 V6.4 (All versions < V6.4 HF2), SINAMICS S200 V6.4 (All versions < V6.4 HF7), SINAMICS S210 V6.4 (All versions < V6.4 HF2). The affected devices allow a factory reset to be executed without the required privileges due to improper privilege management as well as manipulation of configuration data because of leaked privileges of previous sessions. This could allow an unauthorized attacker to escalate their privileges.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.002 (9.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Siemens Sinamics G220
- Siemens Sinamics G220 Firmware — versions 6.4
- Siemens Sinamics G220 V6.4 — versions 0
- Siemens Sinamics S200
- Siemens Sinamics S200 Firmware — versions 6.4
- Siemens Sinamics S200 V6.4 — versions 0
- Siemens Sinamics S210
- Siemens Sinamics S210 Firmware — versions 6.4
- Siemens Sinamics S210 V6.4 — versions 0
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/html/ssa-027652.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-40594?
- CVE-2025-40594 is a medium-severity vulnerability in Siemens Sinamics G220, classified under Improper Privilege Management. CVSS score: 6.3/10. Published 2025-09-09.
- How severe is CVE-2025-40594?
- Medium severity. CVSS v3 base score is 6.3 out of 10.