SonicWall SMA 1000 Zero-Day Chain Exploited for Remote Code Execution

SonicWall disclosed that threat actors are chaining two previously unknown vulnerabilities in SMA 1000 remote-access appliances. CVE-2026-83548, a CVSS 10.0 pre-authentication server-side request forgery in the WorkPlace interface, is used to reach internal functionality, and CVE-2026-83549, a CVSS 7.8 OS command injection in the Appliance Management Console, converts that access into arbitrary command execution. CISA added both to the Known Exploited Vulnerabilities catalogue on 2 September 2026 with a remediation deadline of 5 September. Compromise of these appliances yields authenticated network position behind perimeter controls.