
Critical Pre-Authentication SSRF Flaw Exposes SonicWall SMA1000 Appliances
SonicWall disclosed four critical vulnerabilities in its SMA1000 appliances on October 6, 2026, including CVE-2026-102255, a maximum CVSS 10.0 pre-authentication server-side request forgery (SSRF) flaw. The vulnerability allows unauthenticated attackers to access internal functionality through the WorkPlace portal, potentially enabling unauthorized operations on the network gateway. Additional vulnerabilities include OS command injection and stored XSS flaws requiring administrator access. SonicWall released hotfixes for affected models 6210, 7210, and 8200v, with no evidence of active exploitation reported. This marks the third instance in 2026 where SonicWall has patched critical pre-authentication SSRF flaws in SMA1000 appliances, highlighting ongoing security challenges in SSL-VPN infrastructure amid the continued expansion of remote work environments and sophisticated nation-state targeting of network perimeter devices.
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