Integer overflow in SonicWall Sonicos

CVE-2024-40765

An Integer-based buffer overflow vulnerability in the SonicOS via IPSec allows a remote attacker in specific conditions to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a specially crafted IKEv2 payload.

Vulnerability class: Integer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2024-40765: held from 0.008 to 0.008.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

  • SonicWall Sonicos — versions 6.5.4.4-44v-21-2395 and older versions, 7.0.1-5151 and older versions, 7.1.1-7051 and older versions

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-40765?
CVE-2024-40765 is a critical-severity vulnerability in SonicWall Sonicos, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2025-01-09.
How severe is CVE-2024-40765?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-40765 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.