
SonicWall Refuses to Patch Critical EoL GMS Flaws — What Your Security Team Must Do Now
In November 2026, SonicWall disclosed two unpatched vulnerabilities in its end-of-life Global Management System (GMS) 9.5.2 and earlier: CVE-2026-109593 (CVSS 9.1), an unauthenticated file read flaw enabling exposure of sensitive internal files, and CVE-2026-109594 (CVSS 6.8), a post-authentication SQL injection allowing database access or modification. Because GMS has reached end-of-life, SonicWall will issue no patches, leaving organizations running legacy GMS deployments permanently exposed. This follows active exploitation of a separate critical SSRF flaw (CVE-2026-102255, CVSS 10.0) in SonicWall infrastructure, with over 2,500 documented attack attempts logged since October 2026. The refusal to patch EoL systems is an accelerating industry pattern forcing security teams to choose between costly emergency upgrades and operating with known, publicly documented critical vulnerabilities. As threat actors increasingly target network management platforms as high-value pivot points, organizations relying on legacy SonicWall GMS deployments face compounding regulatory and operational risk with no vendor remediation path.
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