CVE-2024-40766
critical CISA KEVSonicWall SonicOS Improper Access Control Vulnerability
Vendor / product: SonicWall — SonicOS
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
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2024-08-23 07:15
Modified: 2026-09-21 21:17
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2024-09-09 · due 2024-09-30
Known ransomware use: Known
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
sonicwall / sonicos <5.9.2.14-13o, <6.5.2.8-2n, <6.5.4.15.116n, ≤7.0.1-5035
Weakness classification (CWE)
CWE-284 NVD-CWE-noinfo
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0015
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0015 PSIRT@sonicwall.com
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40766 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗