CVE-2026-107782CWE-863broken-access-control

CVE-2026-107782

High · published October 9, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
1.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.5 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00115 · 1.5th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-10-09T01:17Z
References (5)
https://github.com/winsiderss/systeminformer · [email protected]https://github.com/winsiderss/systeminformer/blob/v3.2.25011.2103/SystemInformer/phsvc/svcapiport.c#L196-L230 · [email protected]https://github.com/winsiderss/systeminformer/commit/ce451a264a424f6f386b1615df651f8364aaeb9f · [email protected]https://github.com/winsiderss/systeminformer/releases/tag/v4.0.26241.138 · [email protected]https://www.vulncheck.com/advisories/system-informer-before-4.0.26241.138-incorrect-authorization-in-phsvc-alpc-port · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 20:15Z
    System Informer before 4.0.26241.138 Incorrect Authorization in phsvc ALPC Port
    cvelistv5
  • 08 OCT 20:15Z
    System Informer before 4.0.26241.138 Incorrect Authorization in phsvc ALPC Port
    cvelistv5