A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
CVE-2026-3439
CVSS base score
4.9 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-121
Last modified
November 9, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
sonicwall sonicos
References
- psirt.global.sonicwall.com Vendor Advisory