Return of Stack Variable Address Affecting stm32duino/Arduino_Core_STM32 package, versions [,1.7.0)
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-STM32DUINOARDUINOCORESTM32-16352399
- published3 May 2026
- disclosed20 Apr 2026
- creditJin Chang
Introduced: 20 Apr 2026
CVE-2026-26399 (opens in a new tab)How to fix?
Upgrade stm32duino/Arduino_Core_STM32 to version 1.7.0 or higher.
Overview
Affected versions of this package are vulnerable to Return of Stack Variable Address in the pwm_start function. An attacker can cause memory corruption or potentially execute arbitrary code by triggering interrupt service routines that dereference a dangling pointer to a stack-allocated structure after the function has returned.