Email Security and management
CVE-2026-3469: Denial-of-service (DoS) in Email Security
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Email Security (Linux, Windows) 10.0 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.