🛡️ CVE-2026-1773
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-184 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Product is only affected if IEC 60870-5-104 bi-directional functionality is configured. Enabling secure communication following IEC 62351-3 does not remediate the vulnerability but mitigates the risk of exploitation.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-184
Public Exploit ✅ No
Source NVD
Published 2026-02-24
Updated 2026-06-02
Modified 2026-05-26
Fix URL N/A

Affected Packages

Software From version Fixed in
rtu520-firmware
rtu530-firmware
rtu540-firmware
rtu560-firmware

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