VULNERABILITY INTELLIGENCE
CVE-2026-26399
CVSS score5.3 MEDIUM
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-04-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Description
A stack-use-after-return issue exists in the Arduino_Core_STM32 library prior to version 1.7.0. The pwm_start() function allocates a TIM_HandleTypeDef structure on the stack and passes its address to HAL initialization routines, where it is stored in a global timer handle registry. After the function returns, interrupt service routines may dereference this dangling pointer, resulting in memory corruption.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-562