Description
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
Affected products
sonicwall: sonicos; sonicwall: nsv 270; sonicwall: nsv 470; sonicwall: nsv 870; sonicwall: nsa 2700; sonicwall: nsa 3700; sonicwall: nsa 4700; sonicwall: nsa 5700; sonicwall: nsa 6700; sonicwall: nssp 10700; sonicwall: nssp 11700; sonicwall: nssp 13700; sonicwall: nssp 15700; sonicwall: tz270; sonicwall: tz270w
References1
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001 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
- 0% percentile: 21 · as of 12 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.