Stack-based buffer overflow in SonicOS - CVE-2026-0206
Published: April 29, 2026
Vulnerability identifier: #VU128472
CSH Severity: Low
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-0206
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to stack-based buffer overflow in SonicOS when processing crafted input. A remote privileged user can send crafted input to cause a denial of service.
Affected software
SonicOS
How to mitigate CVE-2026-0206
Install security update from vendor's website.
SonicOS - addressed in versions 6.5.5.2-28n, 7.3.2-7010, 8.2.0-8009