CVE Catalog

CVE-2026-107782

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.12%

1th percentile - higher than 1% of all known CVEs

Summary

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.

Risk Assessment

A local attacker can execute code with SYSTEM privileges, leading to full compromise of the Windows system. This enables backdoor installation and data theft.

Recommendation

Update System Informer to version 4.0.26241.138 or later. Apply the available security fixes.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS