HOMEVULNERABILITIESCVE-2024-40766
HIGHCISA KEVIN THE WILD

CVE-2024-40766

Published: September 9, 2024

EPSS:3.54%probability of exploitation in 30 daysPercentile:87.4th

Official Description

SonicWall SonicOS contains an improper access control vulnerability that could lead to unauthorized resource access and, under certain conditions, may cause the firewall to crash.

NVD Source

CISA KEV Advisory

SonicWall SonicOS Improper Access Control Vulnerability

SonicWall SonicOS contains an improper access control vulnerability that could lead to unauthorized resource access and, under certain conditions, may cause the firewall to crash.

Added to KEV: 2024-09-09Federal patch deadline: 2024-09-30⚠ USED IN RANSOMWARE CAMPAIGNS
Required Action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Risk Analysis

SonicWall SonicOS contains an improper access control vulnerability that could lead to unauthorized resource access and potentially cause the firewall to crash. This is a high-severity issue with confirmed in-the-wild exploitation, requiring prompt action.

This vulnerability is actively being exploited in the wild. The nature of the flaw suggests it could be exploited remotely to gain unauthorized access or disrupt services.

Recommended Action

Apply the latest security updates and patches provided by SonicWall for SonicOS to address the improper access control vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2024-40766 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2024-40766 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2024-40766

CVE-2024-40766: The Patch Fixed the Bug. Nobody Fixed the Configuration., (Tue, Jun 23rd)
SANS ISC· Jun 23, 2026

The vulnerability [xlite_meta score:54 src:SANS ISC xlite_fp:49f68fd0b2b7f0b61ba06e185b4b6b291263601043f937981a47eccb8d4d71e5]

All References (3)

Quick Facts

CVE IDCVE-2024-40766
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)3.54%
PublishedSep 9, 2024

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2024-40766 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.