MajorCritical vulnerability

CVE-2026-107782 (CVSS 8.5)

NVD · officialPublished Oct 8, 2026Risk 37/100

System Informer before 4.0.26241.138 contains an incorrect authorization vulnerability in the phsvc helper that allows local attackers to reach privileged APIs by connecting from any Authenticode-signed process. Attackers can load code into a Microsoft-signed host like rundll32.exe, connect to SiSvcApiPort, and call PhSvcApiCreateService to execute code as SYSTEM.

Technical details

CVSS

8.5

AV:LocalAC:LowPR:LowUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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