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CVE-2026-17539: what it is, who is affected and what to do
Hitachi Energy reported vulnerabilities in RTU500 series CMU firmware across several listed version ranges. If exploited, they could affect confidentiality, integrity and availability of the product. The report refers readers to the vendor's recommended actions.
- Scores and exploitation. The stories below cover this flaw together with others, so the Brief does not give its scores here: check the records below.
- Records. CVE-2026-17539 on the National Vulnerability Database · CISA’s known exploited catalog
The story
Medium
Hitachi Energy warns of flaws in RTU500 CMU firmware
Hitachi Energy reported vulnerabilities in RTU500 series CMU firmware across several listed version ranges. If exploited, they could affect confidentiality, integrity and availability of the product.