CVE-2026-83548
Published 2026-09-01 · Updated 2026-09-03 · Source PSIRT@sonicwall.com
Summary
CVE-2026-83548 is a critical-severity (CVSS 10.0) vulnerability in SonicWall SMA1000 Appliances. CISA added it to the Known Exploited Vulnerabilities catalog on September 2, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by September 5, 2026. CISA does not currently list it as used in ransomware campaigns. SonicWall has 19 vulnerabilities in the KEV catalog, 13 of them linked to ransomware.
All 19 known-exploited SonicWall vulnerabilities →Description
A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path. A remote unauthenticated attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive functionality and perform unauthorized operations.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: SonicWall — SMA1000 Appliances
Name: SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
Date added: 2026-09-02 · Due: 2026-09-05
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.