Description
A denial-of-service (DoS) vulnerability exists due to improper input validation in the SonicWall Email Security appliance, allowing a remote authenticated attacker as admin user to cause the application to become unresponsive.
Affected products
sonicwall: email security; sonicwall: esa5000; sonicwall: esa5050; sonicwall: esa7000; sonicwall: esa7050; sonicwall: esa9000
References1
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0002 Vendor Advisory
Metrics
- CVSS 3.1
-
2.7
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 0% percentile: 34 · as of 12 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.