CVE-2025-27257 Security feature bypass in B30 Multilin
Authenticated attackers can bypass client-side firmware signature checks to install modified firmware on GE Vernova UR IED devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27257?
CVE-2025-27257 is a medium-severity vulnerability in GE Vernova B30 Multilin, published on 10 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient Verification of Data Authenticity vulnerability in GE Vernova UR IED family devices allows an authenticated user to install a modified firmware. The firmware signature verification is enforced only on the client-side dedicated software Enervista UR Setup, allowing the integration check to be bypassed.
Weakness: CWE-345
Which versions are affected by CVE-2025-27257?
How do I fix CVE-2025-27257?
No fix has been published for CVE-2025-27257 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27257 being exploited?
There is no known exploitation of CVE-2025-27257 in the wild and no public exploit code.
Sources
Also known as GHSA-5v9q-jpv7-7w2m.