#VU106987 Missing Synchronization in RTU500 CMU - CVE-2025-1445

Vulnerability identifier: #VU106987

Vulnerability risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-1445

CWE-ID: CWE-820

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RTU500 CMU
Hardware solutions / Firmware

Vendor: ABB

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to missing synchronization in RTU IEC 61850 client and server functionality. A remote attacker can cause a denial of service condition on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

RTU500 CMU: 13.7.1 - 13.7.4

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External links
https://publisher.hitachienergy.com/preview?DocumentId=8DBD000207&languageCode=en&Preview=true
https://www.cisa.gov/news-events/ics-advisories/icsa-25-093-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.