Attackers Exploit Two SonicWall SMA 1000 Zero-Days That May Form an Attack Chain

SonicWall has released security updates to address two security flaws impacting its Secure Mobile Access (SMA) 1000 series VPN appliances that have been exploited in zero-day attacks.

The vulnerabilities, discovered internally by SonicWall’s William Perry and Adam Babis, are listed below –

CVE-2026-83548 (CVSS score: 10.0) –  A pre-authentication SSRF vulnerability in the Appliance