CVE-2026-66154: GMS 9.5.1 and earlier versions

CVE-2026-66154. CVSS 3.1 base score 8.3 (HIGH, Source advisory). EPSS 0.00201 (percentile 0.09512), scored 22-Oct-2026.

Affected technology

GMS · 9.5.1 and earlier versions
SonicWall

Description’s affected range: versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Adjacent network · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 8.3/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-295
CCR priority: 33.3 /100 (P4)
CVSS 3.1: 8.3 /10 · CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H · Source advisory
EPSS: 0.00201 · percentile 0.09512 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-66154.html