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A vulnerability exists in the SonicWall Email Security appliance due to improper input sanitization that may lead to data corruption, allowing a remote authenticated attacker as admin user could exploit this issue by providing crafted input that corrupts application database.

CVE-2026-3470 is a security vulnerability identified in SonicWall Email Security appliances, specifically affecting versions 10.0.34.8215 and earlier, and 10.0.34.8223 and earlier. The root cause is improper input validation (CWE-20), where the appliance fails to adequately sanitize input data. This flaw can be exploited by a remote attacker who has authenticated administrative access to the appliance. By submitting specially crafted input, the attacker can cause corruption of the application database, which may lead to data integrity issues, operational disruptions, or loss of critical email security data. The vulnerability does not appear to allow remote code execution or privilege escalation beyond the admin user level, but the corruption of the database can severely impact the appliance's functionality and the security posture of the protected email environment. No public exploits have been reported yet, and no official patches or CVSS scores are currently available. The vulnerability was published on March 31, 2026, and was reserved earlier that month. SonicWall Email Security appliances are widely used in enterprise environments to filter and protect email traffic, making this vulnerability relevant to organizations relying on these devices for email security.

Detailed information about CVE-2026-3470: CWE-20 Improper input validation in SonicWall Email Security affecting SonicWall Email Security. Get real-time updates

CVE-2026-3470: CWE-20 Improper input validation in SonicWall Email Security - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-3470: CWE-20 Improper input validation in SonicWall Email Security

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