How severe is CVE-2024-40765?

CVE-2024-40765 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-40765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-40765?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-40765 have an EU (EUVD) identifier?

Yes. CVE-2024-40765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38820.

When was CVE-2024-40765 published?

CVE-2024-40765 was published on 2025-01-09 and last updated on 2026-06-17.

CVE-2024-40765

CVE-2024-40765 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38820
Weakness: CWE-190
Published: 2025-01-09
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2024-40765?: CVE-2024-40765 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-40765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-40765?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-40765 have an EU (EUVD) identifier?: Yes. CVE-2024-40765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38820.
When was CVE-2024-40765 published?: CVE-2024-40765 was published on 2025-01-09 and last updated on 2026-06-17.

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0013

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