CVE-2024-40763

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 93.5%
KEV: Not listed

Published

December 5, 2024

Last Modified

November 6, 2025

References (1)

PSIRT@sonicwallhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0018

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-122Heap-based Buffer Overflow

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
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2026-06-02 20:12 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
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Frequently asked(5)

What is CVE-2024-40763?

CVE-2024-40763 is a high vulnerability published on December 5, 2024. 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.

When was CVE-2024-40763 disclosed?

CVE-2024-40763 was first published in the National Vulnerability Database on December 5, 2024, with the most recent update on November 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-40763 actively exploited?

CVE-2024-40763 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-40763?

CVE-2024-40763 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2024-40763?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-40763, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2024-40763

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-40763?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)