PatchTheCEVCVE-2025-40594: A vulnerability has been identified in SINAMICS G220 V6.4 (All versions < V6.4 HF2), SINAMICS S200 V6.4 (All v
25
Routine
MEDIUM 6.3MITIGATEMITIGATEMITIGATE
CVE-2025-40594 is a medium-severity flaw (CVSS 6.3) affecting sinamics g220 firmware, sinamics s200 firmware, sinamics s210 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 esca
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 6.3 (Medium) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 90%) |
| CISA exploited list | No |
| Weakness | CWE-269 |
| Published | 2025-09-09 |
| Last modified | 2026-10-23 |
Publisher (CNA): Siemens AG · Vendor: siemens
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
siemens sinamics g220 firmware MITIGATE
Affected: 6.4 · 6.4 hf1
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.4
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
siemens sinamics s200 firmware MITIGATE
Affected: 6.4
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.4
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
siemens sinamics s210 firmware MITIGATE
Affected: 6.4 · 6.4 hf1
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.4
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.