Insufficient Verification of Data Authencity

CVE-2025-27257

Summary

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.

Impact

An authenticated attacker can install a malicious firmware on a vulnerable device

Issue Date

March 7, 2025

Affects

This issue affect the GE Vernova UR IED device family from version 7.0 to 8.60

CVE Name

CVE-2025-27257

CVSS Details

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CVSS Score

6.1

Solution

Update the firmware of affected devices to the latest released version

Mitigations

Acknowledgements

Diego Giubertoni of Nozomi Networks

Threat Intelligence

Curated and maintained by Nozomi Networks Labs, the Threat Intelligence™ service provides threat and vulnerability updates to Guardian, making it easy for IT/OT professionals to stay on top of current OT and IoT risks.

Learn more
Threat Intel screenshot
Nozomi Logo circle

“Threat actors love finding new ways to attack critical infrastructure. We love finding new ways to detect their malware before damage occurs.”

Research Projects

TRITON

TRITON is the first known cyberattack that directly interacted with a Safety Instrumented System (SIS). Labs reverse engineered the TriStation suite of software and delivered a report and two free tools for security researchers. This research was presented at Black Hat USA 2018.

GreyEnergy

The Labs team reverse engineered the GreyEnergy malicious document (maldoc) that leads to the installation of the malware (backdoor) on a victim’s network. Project outcomes include a report, multiple blogs and two free tools for security researchers.

IEC 62351

IEC Working Group 15 (WG15) is developing technology standards for secure-by-design power systems. Labs contributes to the standards and has demonstrated how they can be used to identify hard-to-detect cyberattacks. Research from this effort was presented at Black Hat USA 2019.

See all

Take the next step.

Discover how easy it is to identify and respond to cyber threats by automating your OT and IoT asset discovery, inventory, and management.