CVE-2026-1773

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...

CVE-2026-1773

CVE-2026-1773 impacts IEC 60870-5-104 stack when bi-directional functionality is configured. The issue is a Denial of Service caused by receiving an invalid U-format frame, with impact to availability (HIGH) and no confidentiality/integrity impacts. The vulnerability is exploitable via network wi...

PT-2026-21677

Name of the Vulnerable Software and Affected Versions IEC 60870-5-104 affected versions not specified Description The software may experience a denial of service when receiving invalid U-format frames. The issue affects products only if the IEC 60870-5-104 bi-directional functionality is...