Improper Handling of Unicode Encoding in SonicWall SMA 1000 - CVE-2026-4116

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Main Vulnerability Database Vulnerabilities #VU125519

Improper Handling of Unicode Encoding in SonicWall SMA 1000 - CVE-2026-4116

Published: April 8, 2026


Vulnerability identifier: #VU125519
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-4116
CWE-ID: CWE-176
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: SonicWall
Affected software:
SonicWall SMA 1000

Detailed vulnerability description

The vulnerability allows a remote user to bypass Workplace/Connect Tunnel TOTP authentication.

The vulnerability exists due to improper handling of unicode encoding in SonicWall SMA1000 series appliances when processing Workplace/Connect Tunnel authentication input. A remote user can use crafted unicode input to bypass Workplace/Connect Tunnel TOTP authentication.


How to mitigate CVE-2026-4116

Install security update from vendor's website.

Sources