CVE intelligence and bounded remediation

CVE-2024-40763 — Heap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy

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.

Severity
High
CVSS
7.5 (3.1)
Published
2024-12-05
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-122

Affected products

  • sonicwall / sma_200_firmware
  • sonicwall / sma_210_firmware
  • sonicwall / sma_400_firmware
  • sonicwall / sma_410_firmware
  • sonicwall / sma_500v_firmware

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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