CVE-2026-8479
CVE-2026-8479
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.9EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
26 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Hitachi Energy · RTU500 series CMU firmwareWant to know if your infrastructure is exposed to this?
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