#VU123197 Format string error in SonicOS - CVE-2026-0400
Published: February 24, 2026
Vulnerability identifier: #VU123197
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-0400
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SonicOS
SonicOS
Software vendor:
SonicWall
SonicWall
Description
The vulnerability allows a remote user to perform a denial of service attack.
The vulnerability exists due to a format string error. A remote privileged user can supply a specially crafted input to the system and perform a denial of service attack
Remediation
Install updates from vendor's website.