SonicWall GMS 9.5.2 EoL Gets No Patch for CVSS 9.1 File-Read Flaw

Wed, 04 Nov 2026 18:40:06 +0000

Engineer — Act: Public PoC exists for a CVSS 9.1 unauthenticated file-read with no patch ever coming; if GMS 9.5.2 or earlier is running, migrate to a supported version or immediately isolate the management interface from untrusted networks.
SOC/IR — Plan: No active exploitation confirmed (EPSS 0.01, not KEV), but the public PoC raises the probability of near-term attempts; build a detection for unusual HTTP requests against GMS endpoints matching the PoC’s access pattern.
Leader — Plan: An unfixable critical flaw in an EoL SonicWall management product is a technology lifecycle risk — confirm whether GMS 9.5.2 is in inventory and allocate migration budget this quarter before exploitation pressure rises.
Signals: CVE-2026-109593 — CISA KEV: not listed, EPSS 0.01, public PoC on GitHub

Unauthenticated-Vuln on CuraSec