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CVE-2026-16315— Authentication and authorization bypass via cryptographic timing side-channel attack 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 4.10之前版本存在侧信道信息泄露漏洞，该漏洞源于后端认证机制存在加密时序侧信道漏洞，可能导致未经身份验证的攻击者伪造有效认证凭据，绕过认证和授权，冒充合法客户端，获取系统配置完全访问权限，从而修改、重置或未授权更改系统参数。

CVSS 8.7 · High EPSS 0.42% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
OMICRON electronics GmbH OMICRON StationGuard < 4.10 affected
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I. Basic Information for CVE-2026-16315

Vulnerability Information
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Vulnerability Title
Authentication and authorization bypass via cryptographic timing side-channel attack in StationGuard
Source: CVE Program / CVE List V5
Vulnerability Description
OMICRON StationGuard before version 4.10 contains a cryptographic timing side-channel vulnerability in the backend authentication mechanism that may allow an unauthenticated attacker to forge valid authentication credentials, bypass authentication and authorization, and impersonate legitimate clients. An attacker can gain full access to the system configuration, allowing modification, reset, or unauthorized alteration of system parameters.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
omicronenergy stationguard 侧信道信息泄露漏洞
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 4.10之前版本存在侧信道信息泄露漏洞，该漏洞源于后端认证机制存在加密时序侧信道漏洞，可能导致未经身份验证的攻击者伪造有效认证凭据，绕过认证和授权，冒充合法客户端，获取系统配置完全访问权限，从而修改、重置或未授权更改系统参数。
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 0 ~ 4.10 -

II. Public POCs for CVE-2026-16315

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III. Intelligence Information for CVE-2026-16315

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Vendor Advisories for CVE-2026-16315 (1)

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

CVE-2026-16731 8.3 HIGH Authentication and authorization bypass via cryptographic timing side-channel attack in St
CVE-2026-16316 4.3 MEDIUM Malformed IEC 61850 Sampled Values frames cause partial denial of service in StationGuard

IV. Related Vulnerabilities

Same product: OMICRON StationGuard
Same vendor: OMICRON electronics GmbH
Same weakness: CWE-208

V. Comments for CVE-2026-16315

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