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Fencer Vulns
critical 9.3

CVE-2024-40766 kev+ ransomware in the critical feed json

An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorize…

published 2024-08-23 2 y ago modified 2026-09-21 48 d ago also EUVD-2024-38613

cvss
9.3
version 3.1, CNA
cisa kev
Exploited
added 2024-09-09, used in ransomware
epss
18.4%
EPSS 18.4% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

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.

Patch / fix

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

  • sonicwall sonicos 5.9.2.14-13o, 6.5.2.8-2n, 6.5.4.15.116n

Timeline

  1. Published
  2. Added to CISA KEV
  3. CISA SSVC: exploitation active
  4. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-09-30 (2 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
SonicWall, SonicOS
CISA name
SonicWall SonicOS Improper Access Control Vulnerability

Ransomware

Groups reported to have exploited it in intrusions.

  • Akira ransomware gang
  • Fog ransomware gang
  • DragonForce ransomware gang

reported by arcticwolf.comarcticwolf.comccb.belgium.be

Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

18.38% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Affected products

  • SonicWall SonicOS

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.