CVE-2026-1773
8.7
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Hitachi Energy | RTU500 series CMU firmware | 12.7.1 <= 12.7.7 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.5.1 <= 13.5.4 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.6.1 <= 13.6.2 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.7.1 <= 13.7.7 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.8.1 | affected |
Weaknesses
- CWE-184: CWE-184 Incomplete List of Disallowed Inputs
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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