falconinternet.net • 22h
Critical Zero-Day Exploitation of SonicWall SMA1000 Series Appliances
Threat actor UTA0533 is actively exploiting a dual-vulnerability chain targeting SonicWall SMA1000 Series appliances to achieve full perimeter compromise. The attack initiates with CVE-2026-15409, an unauthenticated SSRF in the /wsproxy websocket proxy, allowing attackers to establish TCP tunnels to internal services. This enables the exploitation of CVE-2026-15410, a path traversal vulnerability within the ctrl-service remove_hotfix workflow, resulting in root-level RCE. Post-exploitation activities include the theft of TOTP MFA seeds, session databases, and LDAP credentials, facilitating "VPN-less" lateral movement to internal Domain Controllers. CISA has mandated remediation before the July 17, 2026 deadline.