CVE-2024-40766
Actively exploited. CVE-2024-40766 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-09-09) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
[Update on August 7, 2025] On August 6, 2025, SonicWall updated part of its initial statement to indicate that the mentioned security incidents were likely correlated to the vulnerability CVE-2024-40766. This was addressed in a security bulletin, SNWLID-2024-0015 (see...
CSIRTS triage
- What
- Security incidents in SonicWall firewalls are likely correlated to a specific vulnerability.
- Who is affected
- Users of SonicWall firewalls affected by the incidents.
- Urgency
- Remediation is necessary to address potential security risks, though the severity is currently unknown.
- Action
- Refer to SonicWall's security bulletin for guidance.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 96% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownexploitedSecurity incidents in SonicWall firewalls (August 5, 2025)cert-fr-alerte · 2025-08-05
- unknownexploitedVulnerability in SonicWall (September 10, 2024)cert-fr-alerte · 2024-09-10
- criticalexploitedCVE-2024-40766: SonicWall SonicOS Improper Access Control Vulnerabilitycisa-kev · 2024-09-09
External references
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[](https://www.csirts.com/cve/CVE-2024-40766)