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…

published 2025-09-09 14 mo ago modified 2026-10-23 16 d ago also EUVD-2025-27242

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

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.

Patch / fix

fixed in 3

Siemens SINAMICS G220 V6.4 V6.4 HF2
Siemens SINAMICS S200 V6.4 V6.4 HF7
Siemens SINAMICS S210 V6.4 V6.4 HF2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-254-03 updated 2026-03-12 cvss 6.3

Siemens SINAMICS Drives

Siemens SINAMICS G220 V6.4 <V6.4_HF2
affected: fixed in V6.4 support.industry.siemens.com
Siemens SINAMICS S200 V6.4 <V6.4_HF7
affected: fixed in V6.4 support.industry.siemens.com
Siemens SINAMICS S210 V6.4 <V6.4_HF2
affected: fixed in V6.4 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 13 mo ago (2025-09-09)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L
CNA	4.0	6.9	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L
CNA	4.0	6.9	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Siemens SINAMICS G220 V6.4
Siemens SINAMICS S200 V6.4
Siemens SINAMICS S210 V6.4

Classification

Weakness

CWE-269 Improper Privilege Management

References

cert-portal.siemens.com /productcert/html/ssa-027652.html
vendor-advisory

Sources

CVE List CVE-2025-40594
NVD CVE-2025-40594

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary