Description
A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.
Affected products
sonicwall: sonicos; sonicwall: nsa 2650; sonicwall: nsa 3600; sonicwall: nsa 3650; sonicwall: nsa 4600; sonicwall: nsa 4650; sonicwall: nsa 5600; sonicwall: nsa 5650; sonicwall: nsa 6600; sonicwall: nsa 6650; sonicwall: sm 9200; sonicwall: sm 9250; sonicwall: sm 9400; sonicwall: sm 9450; sonicwall: sm 9600
References1
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0004 Vendor Advisory
Metrics
- CVSS 3.1
-
4.9
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 44 · as of 13 November 2026
- CWE
- CWE-121
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.