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CVE-2026-1773
Published: Feb 24, 2026
Modified: May 27, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Hitachi Energy | RTU500 series CMU firmware | affected 12.7.1 - <= 12.7.7affected 13.5.1 - <= 13.5.4affected 13.6.1 - <= 13.6.2affected 13.7.1 - <= 13.7.7affected 13.8.1 |
Weaknesses (CWE)
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