CVE-2025-40602
SonicWall SMA1000 Missing Authorization Vulnerability
SonicWall SMA1000 appliance
A local privilege escalation vulnerability due to insufficient authorization in the SonicWall SMA1000 appliance management console (AMC).
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 17 December 2025. US federal agencies were required to remediate it by 24 December 2025.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 2.8%, which is higher than 86.3% 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:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2025-40602 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2025-40602.
What does CVE-2025-40602 affect?
CVE-2025-40602 affects SonicWall SMA1000 appliance. A local privilege escalation vulnerability due to insufficient authorization in the SonicWall SMA1000 appliance management console (AMC).
How severe is CVE-2025-40602?
CVE-2025-40602 is rated MEDIUM with a CVSS base score of 6.6. EPSS puts the probability of exploitation in the next 30 days at 2.8%, higher than 86.3% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 24 December 2025.
How should organisations respond to CVE-2025-40602?
Apply the vendor patch for SonicWall SMA1000 appliance 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.