PatchTheCVECVE-2024-40763: Heap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy
CVE-2024-40763 is a high-severity flaw (CVSS 7.5) affecting sma 200 firmware, sma 210 firmware, sma 400 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.9% (top 39%) |
| CISA exploited list | No |
| Weakness | CWE-122 |
| Published | 2024-12-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-40763?
sma 200 firmware: upgrade to 10.2.1.14-75sv; sma 210 firmware: upgrade to 10.2.1.14-75sv; sma 400 firmware: upgrade to 10.2.1.14-75sv. Exact commands for each OS are on this page.
Is CVE-2024-40763 being exploited?
CVE-2024-40763 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-40763 affect?
CVE-2024-40763 affects sma 200 firmware, sma 210 firmware, sma 400 firmware. Severity is high (CVSS 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.
How urgent is CVE-2024-40763?
Priority 41/100. High severity
Software pages
Related CVEs
- CVE-2025-32821 HIGH 7.2 UPGRADE UPGRADE A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN admin privileges can with admin p
- CVE-2025-32820 HIGH 8.8 UPGRADE UPGRADE A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges can inject a path
- CVE-2025-32819 HIGH 8.8 UPGRADE UPGRADE A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges to bypass the pat
- CVE-2024-53703 HIGH 8.1 UPGRADE UPGRADE A vulnerability in the SonicWall SMA100 SSLVPN firmware 10.2.1.13-72sv and earlier versions mod_httprp library
- CVE-2024-53702 MEDIUM 5.3 UPGRADE UPGRADE Use of cryptographically weak pseudo-random number generator (PRNG) vulnerability in the SonicWall SMA100 SSLV