CVE-2026-16316 PUBLISHED

Malformed IEC 61850 Sampled Values frames cause partial denial of service in StationGuard

Assigner: OMICRON
Reserved: 20.07.2026 Published: 06.08.2026 Updated: 06.08.2026

OMICRON StationGuard 4.00 contains an improper input validation vulnerability in its IEC 61850 Sampled Values (SV) frame processing. A specially crafted SV frame can cause the affected process to terminate, disrupting alert processing for Sampled Values traffic. The vulnerability does not affect overall system availability or the processing of other traffic types, and the process is automatically restarted, and the failure is immediately reported to the user.

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/R:A/RE:M
CVSS Score: 1.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 4.3

Attack Vector	Adjacent Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	OMICRON electronics GmbH
Product	OMICRON StationGuard
Versions	Default: unaffected Version 4.00 is affected

References

https://www.omicronenergy.com/.well-known/csaf/osa-21.json

Problem Types

CWE-20 Improper input validation CWE

Impacts

CAPEC-153 Input Data Manipulation