Out-of-bounds Write 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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-ZEPHYRPROJECTRTOSZEPHYR-17669869
- published29 Jun 2026
- disclosed28 Jun 2026
- creditUnknown
Introduced: 28 Jun 2026
CVE-2026-10644 (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 Out-of-bounds Write in the uart_rx_enable process when invoked with a one-byte receive buffer and asynchronous UART configuration enabled. An attacker can cause single-byte memory corruption adjacent to the RX buffer, potentially leading to a crash or denial of service, by sending crafted UART RX data as a connected serial peer. This is only exploitable if asynchronous UART is enabled and the consumer enables RX with a one-byte buffer.