CVE Catalog

CVE-2026-1773

High
Published: Translated: NVD NIST

Summary

The IEC 60870-5-104 protocol used in RTU500 has a potential Denial of Service vulnerability that can occur when receiving invalid U-format frames. The product is only affected if the bi-directional functionality of the protocol is configured.

Risk Assessment

The organization may be exposed to attacks that could disrupt system operations, impacting service availability.

Recommendation

It is recommended to configure secure communication following IEC 62351-3, which may help mitigate the risk of exploitation of this vulnerability.

Related vulnerabilities

Original NVD description (English source)

IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Product is only affected if IEC 60870-5-104 bi-directional functionality is configured. Enabling secure communication following IEC 62351-3 does not remediate the vulnerability but mitigates the risk of exploitation.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS