CVE-2024-40764
Published: 18 July 2024
Summary
CVE-2024-40764 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Sonicwall Sonicos. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 6.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A heap-based buffer overflow vulnerability tracked as CVE-2024-40764 affects the IPSec VPN component of SonicOS. The flaw, assigned CWE-122 and CWE-787, carries a CVSS 3.1 score of 7.5 and permits remote, unauthenticated attackers to trigger a denial of service without any user interaction.
An unauthenticated attacker with network access can send specially crafted traffic to the IPSec VPN service, causing memory corruption that results in a crash and loss of availability. The attack requires no credentials or prior access, aligning with the CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
SonicWall has published advisory SNWLID-2024-0012 detailing the issue. The current EPSS score stands at 0.1016 with an identical peak value, indicating moderate but stable exploitation probability since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38612
Vulnerability details
Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.