CVE-2024-40766
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.
do firstApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Can a WAF block it? Partly. The bug can be reached over the network, so generic WAF rules may stop some attacks. Its weakness type is unknown, so we cannot be more precise.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Is CVE-2024-40766 being exploited?
Yes. CVE-2024-40766 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2024-40766?
CVE-2024-40766 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2024-40766?
Yes. A fix has been recorded for CVE-2024-40766. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2024-40766 affect?
CVE-2024-40766 affects sonicwall:sonicos. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
- affected5.9.2.14-12o and older versions
- affected6.5.4.14-109n and older versions
- affected7.0.1-5035 and older versions
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- active
- automatable
- yes
- technical impact
- partial
Assessed by CISA 9 Sept 2024 (SSVC 2.0.3).
timeline
- 23 Aug 2024Published
- 9 Sept 2024Added to CISA KEV (exploited in the wild) · 17 days later
- 9 Sept 2024CISA SSVC assessment: exploitation active · 1 day later
- 30 Sept 2024CISA remediation due date (US federal agencies) · 20 days later
- 21 Sept 2026CVE record last updated · 722 days (about 2 years) later
- 2 Nov 2026Analysed by vulneraibility.com · 42 days later
- Advisorypsirt.global.sonicwall.com /vuln-detail/SNWLID-2024-0015
- Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40766
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.