What is CVE-2026-26399?

CVE-2026-26399 is a vulnerability in N/a. Published 2026-04-20.

Is CVE-2026-26399 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in N/a

CVE-2026-26399

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 i…

EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.

Affected products

N/a — versions n/a

Public proof-of-concept exploits

Acen28/CVE-2026-26399-Disclosure

References

github.com/stm32duino/Arduino_Core_STM32/releases/tag/1.6.1
github.com/Acen28/CVE-2026-26399-Disclosure

Frequently asked questions

What is CVE-2026-26399?: CVE-2026-26399 is a vulnerability in N/a. Published 2026-04-20.
Is CVE-2026-26399 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.