How severe is CVE-2024-40763?

CVE-2024-40763 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-40763 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40763?

CVE-2024-40763 primarily affects Sonicwall Sma 200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-40763?

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

Does CVE-2024-40763 have an EU (EUVD) identifier?

Yes. CVE-2024-40763 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38806.

When was CVE-2024-40763 published?

CVE-2024-40763 was published on 2024-12-05 and last updated on 2026-06-17.

CVE-2024-40763

CVE-2024-40763 is a high-severity vulnerability in Sonicwall Sma 200 Firmware with a CVSS 3.x base score of 7.5. 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-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38806
Weakness: CWE-122
Affected product: Sonicwall Sma 200 Firmware
Published: 2024-12-05
Last modified: 2026-06-17

Description

Heap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy. This allows remote authenticated attackers to cause Heap-based buffer overflow and potentially lead to code execution.

Frequently asked questions

What is CVE-2024-40763?: Heap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy. This allows remote authenticated attackers to cause Heap-based buffer overflow and potentially lead to code execution.
How severe is CVE-2024-40763?: CVE-2024-40763 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-40763 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40763?: CVE-2024-40763 primarily affects Sonicwall Sma 200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-40763?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-40763 have an EU (EUVD) identifier?: Yes. CVE-2024-40763 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38806.
When was CVE-2024-40763 published?: CVE-2024-40763 was published on 2024-12-05 and last updated on 2026-06-17.

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0018

Affected products (5)

cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma_500v_firmware:*:*:*:*:*:*:*:*

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