CVE-2026-66154EPSS p9.1%

CVE-2026-66154CVE-2026-66154

Description

An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes.

Scoring

CVSS 8.3 ()
VectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS0.20% probability of exploitation · percentile 9.1% · 2026-10-05T12:00:23Z
Last modified2026-08-28
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.