CVE-2026-83548
SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
SonicWall SMA1000 Appliances
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 2 September 2026. US federal agencies were required to remediate it by 5 September 2026.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 0.7%, which is higher than 51.2% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Frequently asked questions
Is CVE-2026-83548 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2026-83548.
What does CVE-2026-83548 affect?
CVE-2026-83548 affects SonicWall SMA1000 Appliances. 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.
How severe is CVE-2026-83548?
CVE-2026-83548 is rated CRITICAL with a CVSS base score of 10. EPSS puts the probability of exploitation in the next 30 days at 0.7%, higher than 51.2% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 5 September 2026.
How should organisations respond to CVE-2026-83548?
Apply the vendor patch for SonicWall SMA1000 Appliances as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.