Vulnerability in SonicWall (September 10, 2024)
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
On August 22, 2024, Sonicwall released a patch for the critical vulnerability CVE-2024-40766 affecting Sonicwall generation 5, 6, and 7 firewalls. This vulnerability, of the type access control failure, allows an attacker to cause a remote denial of service, a breach of...
CSIRTS triage
- What
- A critical vulnerability in SonicWall generation 5, 6, and 7 firewalls allows an attacker to cause a remote denial of service.
- Who is affected
- Deployments of SonicWall generation 5, 6, and 7 firewalls are affected.
- Urgency
- Remediation is urgent due to active exploitation and unknown severity.
- Action
- Apply the patch released on August 22, 2024.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://www.cert.ssi.gouv.fr/alerte/CERTFR-2024-ALE-011/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2024-40766Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 96% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2024-40766 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownexploitedSecurity incidents in SonicWall firewalls (August 5, 2025)cert-fr-alerte
- criticalexploitedCVE-2024-40766: SonicWall SonicOS Improper Access Control Vulnerabilitycisa-kev
Recent advisories for SonicWall
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2025-40602: SonicWall SMA1000 Missing Authorization Vulnerabilitycisa-kev · 2025-12-17
- unknownexploitedSecurity incidents in SonicWall firewalls (August 5, 2025)cert-fr-alerte · 2025-08-05
- criticalexploitedCVE-2023-44221: SonicWall SMA100 Appliances OS Command Injection Vulnerabilitycisa-kev · 2025-05-01
- criticalexploitedCVE-2021-20035: SonicWall SMA100 Appliances OS Command Injection Vulnerabilitycisa-kev · 2025-04-16
- criticalexploitedCVE-2024-53704: SonicWall SonicOS SSLVPN Improper Authentication Vulnerabilitycisa-kev · 2025-02-18
- criticalexploitedCVE-2025-23006: SonicWall SMA1000 Appliances Deserialization Vulnerabilitycisa-kev · 2025-01-24
More from CERT-FR Alertes de sécurité
- unknown[Update] Vulnerability in Microsoft Exchange Server (May 15, 2026)2026-05-15
- unknownVulnerability in F5 BIG-IP Access Policy Manager (March 31, 2026)2026-03-31
- unknownAlert note – Targeting instant messaging accounts (March 20, 2026)2026-03-20
- unknown[Update] Vulnerability in Cisco Catalyst SD-WAN (February 25, 2026)2026-02-25
- unknown[Update] Multiple vulnerabilities in Ivanti Endpoint Manager Mobile (January 30, 2026)2026-01-30