Stack-based Buffer Overflow Affecting espressif/arduino-esp32 package, versions [,3.3.8)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-ESPRESSIFARDUINOESP32-16351927
- published3 May 2026
- disclosed24 Apr 2026
- creditAmemoyoi
Introduced: 24 Apr 2026
CVE-2026-41429 (opens in a new tab)How to fix?
Upgrade espressif/arduino-esp32 to version 3.3.8 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow via improper validation of the name_len field in the NBNS packet handling process. An attacker can cause memory corruption and potentially execute arbitrary code or disrupt device operation by sending specially crafted NBNS requests to UDP port 137 when NetBIOS is enabled.