What’s Vulnerable › Vulnerabilities
CVE-2026-8479
- Severity: medium (CVSS 6.9 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-26 · updated 2026-07-23
- Weakness: CWE-476
Description
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.
Affected products
- Hitachi Energy RTU500 series CMU firmware: from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.3; from 13.7.1 through 13.7.8; 13.8.1
References
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