CVE-2024-40764 — Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unau

Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).

01What is this vulnerability?

Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).

02Affected products

Vendor	Product	Versions
SonicWall	SonicOS	6.5.4.4-44v-21-2395 and older versions, 7.0.1-5151 and older versions, 7.1.1-7051 and older versions

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-07-18T07:42:37.995Z
• Last modified: 2024-08-02T04:39:54.567Z

09References

• psirt.global.sonicwall.com — https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0012