CVE-2026-17539
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Hitachi Energy | RTU500 series CMU firmware | 12.7.1 <= 12.7.7 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.5.1 <= 13.5.4 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.6.1 <= 13.6.3 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.7.1 <= 13.7.8 | affected |
| Hitachi Energy | RTU500 series CMU firmware | 13.8.1 <= 13.8.2 | affected |
Weaknesses
- CWE-476: CWE-476 NULL pointer dereference
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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