CVE-2026-17539
Last modified
CVE-2026-17539 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a NULL pointer dereference in the last entry of the enhanced message queue. This can cause a BCI_IEC104 fatal write error, resulting in connection interruption and restart, and ultimately a denial of service for bidirectional IEC 60870-5-104 communication.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a NULL pointer dereference in the last entry of the enhanced message queue. This can cause a BCI_IEC104 fatal write error, resulting in connection interruption and restart, and ultimately a denial of service for bidirectional IEC 60870-5-104 communication.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | 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, <= 13.8.2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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