CVE-2026-17539
Medium · 5.9CVSS
5.9
EPSS
0.3%
Published
Sep 3, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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