Out-of-bounds Read Affecting zephyrproject-rtos/zephyr package, versions [4.2.0,4.3.1)[4.4.0-rc1,4.4.2-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-18507640
- published2 Aug 2026
- disclosed29 Jul 2026
- creditUnknown
Introduced: 29 Jul 2026
NewCVE-2026-10684 (opens in a new tab)How to fix?
Upgrade zephyrproject-rtos/zephyr to version 4.3.1, 4.4.2-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read through the print_coredump_hdr function. An attacker can cause disclosure of device memory contents or a crash by providing a crafted stored coredump with an out-of-range tgt_code field, which leads to an out-of-bounds read when the value is used as an index into a fixed-size array. This is only exploitable if the attacker has local shell access and can stage or corrupt the stored coredump in the flash or in-memory backend.