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CVE-2026-16316— Malformed IEC 61850 Sampled Values frames cause partial denial of service in StationGuard

Quick assessment

Affected
OMICRON electronics GmbH OMICRON StationGuard
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

omicronenergy stationguard是omicronenergy公司的一套变电站自动化安全网关。 omicronenergy stationguard 4.00版本存在输入验证错误漏洞，该漏洞源于IEC 61850 Sampled Values（SV）帧处理存在输入验证不当，特制的SV帧可导致受影响进程终止，从而中断采样值流量的警报处理。

CVSS 4.3 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
OMICRON electronics GmbH OMICRON StationGuard 4.00 affected
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I. Basic Information for CVE-2026-16316

Vulnerability Information
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Vulnerability Title
Malformed IEC 61850 Sampled Values frames cause partial denial of service in StationGuard
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
omicronenergy stationguard 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
omicronenergy stationguard是omicronenergy公司的一套变电站自动化安全网关。 omicronenergy stationguard 4.00版本存在输入验证错误漏洞，该漏洞源于IEC 61850 Sampled Values（SV）帧处理存在输入验证不当，特制的SV帧可导致受影响进程终止，从而中断采样值流量的警报处理。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OMICRON electronics GmbH OMICRON StationGuard 4.00 -

II. Public POCs for CVE-2026-16316

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III. Intelligence Information for CVE-2026-16316

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Vendor Advisories for CVE-2026-16316 (1)

Same Patch Batch · OMICRON electronics GmbH · 2026-08-06 · 3 CVEs total

CVE-2026-16315 8.7 HIGH Authentication and authorization bypass via cryptographic timing side-channel attack in St
CVE-2026-16731 8.3 HIGH Authentication and authorization bypass via cryptographic timing side-channel attack in St

IV. Related Vulnerabilities

Same product: OMICRON StationGuard
Same vendor: OMICRON electronics GmbH
Same weakness: CWE-20

V. Comments for CVE-2026-16316

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