Use After Free Affecting zephyrproject-rtos/zephyr package, versions [0,4.4.2-rc1)
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-ZEPHYRPROJECTRTOSZEPHYR-17954823
- published12 Jul 2026
- disclosed12 Jul 2026
- creditUnknown
Introduced: 12 Jul 2026
CVE-2026-10663 (opens in a new tab)How to fix?
Upgrade zephyrproject-rtos/zephyr to version 4.4.2-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the usbh_device_disconnect process. An attacker can cause system crashes and memory corruption by triggering a second device-removed event after a root device disconnect, leading to operations on a freed memory object. This is only exploitable if the experimental USB host stack is enabled and the attacker has physical USB access or can use a rogue device to manipulate USB connection events.