Unrated severityNVD Advisory· Published Feb 24, 2026· Updated Feb 28, 2026
CVE-2026-1773
CVE-2026-1773
Description
IEC 60870-5-104: 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.
Affected products
1- Hitachi Energy/RTU500 series CMU firmwarev5Range: 12.7.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
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