CVE-2026-8479
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode (BCI) is configured.
| CWE | CWE-476 |
| Vendor | hitachi energy |
| Product | rtu500 series cmu firmware |
| Published | May 26, 2026 |
| Last Updated | May 26, 2026 |
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Affected Versions
Hitachi Energy / RTU500 series CMU firmware
12.7.1 ≤ 12.7.7 13.5.1 ≤ 13.5.4 13.6.1 ≤ 13.6.3 13.7.1 ≤ 13.7.8 13.8.1