CVE-2025-27253 Security feature bypass in B30 Multilin
Attackers can bypass firewall rules and send malicious network traffic via TCP port forwarding due to missing IP and port validation in GE Vernova IEDs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27253?
CVE-2025-27253 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
A CWE-15 "External Control of System or Configuration Setting" in GE Vernova UR IED family devices from version 7.0 up to 8.60 allows an attacker to provide input that establishes a TCP connection through a port forwarding. The lack of the IP address and port validation may allow the attacker to bypass firewall rules or to send malicious traffic in the network.
Weakness: CWE-15
Which versions are affected by CVE-2025-27253?
How do I fix CVE-2025-27253?
No fix has been published for CVE-2025-27253 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27253 being exploited?
There is no known exploitation of CVE-2025-27253 in the wild and no public exploit code.
Sources
Also known as GHSA-j5vp-q6vg-25mf.