HIGH 8.5 NVD
CVE-2026-107782
System Informer before 4.0.26241.138 contains an incorrect authorization vulnerability in the phsvc helper that allows local attackers to reach privileged APIs
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.
References
- https://github.com/winsiderss/systeminformer
- https://github.com/winsiderss/systeminformer/blob/v3.2.25011.2103/SystemInformer/phsvc/svc
- https://github.com/winsiderss/systeminformer/commit/ce451a264a424f6f386b1615df651f8364aaeb
- https://github.com/winsiderss/systeminformer/releases/tag/v4.0.26241.138
- https://www.vulncheck.com/advisories/system-informer-before-4.0.26241.138-incorrect-author
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-10-08 via NVD.
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