Vulnerability intelligence

CVE-2024-40766

An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorized resource access and in specific conditions, causing the firewall to crash. This issue affects SonicWall Firewall Gen 5 and Gen 6 devices, as well as Gen 7 devices running SonicOS 7.0.1-5035 and older versions.

CVSS Score

9.3

Critical

EPSS — Exploit Probability

18%

Riskier than 97% of all CVEs

Exploitation

Confirmed in the wild

KEV since 2024-09-09

Remediation

Patch available

Federal deadline 2024-09-30

NVD entry Vendor patch PoC / advisory CISA KEV

1 article across 1 outlet · first covered Jun 23, 2026 · latest Jun 23, 2026

Associated threat actors

Storm-1567

Coverage timeline

CVE-2024-40766 exposes SonicWall firewalls to ransomware
isc.sans.edu · Jun 23, 2026