CVE-2024-40766: SonicWall SonicOS (Critical, CVSS 9.8)
- CVSS
- 9.8 Critical (v3.1)
- EPSS
- 18.4% chance of exploitation in the next 30 days (higher than 97.2% of CVEs)
- Exploited in the wild
- Yes, on CISA’s KEV list since Sep 9, 2024; used by ransomware
- Public exploit
- None reported in public exploit databases
- Weakness
- CWE-284
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Published
- Aug 23, 2024
- CISA fix-by date
- Sep 30, 2024 (for US federal agencies)
What it is
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.
Description from the National Vulnerability Database.
What to do
CISA: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Check whether you run SonicWall SonicOS, then apply the vendor’s fix or mitigation from the advisories below. Because this flaw is exploited or has public exploit code, treat it as urgent and check for signs of compromise, not just the patch level.
Advisories and fixes
ThreatRoundup coverage
SafePay Ransomware Hit 600 Victims Using Stolen VPN Logins and Old Bugs
Sources: NVD, FIRST EPSS, CISA KEV, and public exploit databases (availability only). ThreatRoundup reports whether public exploit code exists but never links to it: fake proof-of-concepts that infect security researchers are common. This page updates automatically.