CVE-2026-0400 A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall

Description

A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.

Affected products and versions

Product	Affected versions	Fixed in
SonicOS	Versions not published

Other CVEs of SonicOS

The 75 CVEs of SonicOS →

CVE-2026-19703 A weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions… 5.1 Medium CVE-2026-77709 A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+… 5.9 Medium CVE-2026-77708 A pre-authentication stack-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication… 5.9 Medium CVE-2026-19868 SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability 7.5 High