Incorrect Authorization Affecting zephyrproject-rtos/zephyr package, versions [2.6.0,4.3.1)[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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- published2 Aug 2026
- disclosed1 Aug 2026
- creditUnknown
Introduced: 1 Aug 2026
NewCVE-2026-2411 (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 Incorrect Authorization due to improper enforcement of security permissions in the gatt_notify and gatt_indicate functions. An attacker can access protected characteristic values by connecting to the device and enabling notifications or indications without meeting the required encryption or authentication level. This is only exploitable if the application declares notify/indicate characteristics that require encryption or authentication, and the Client Characteristic Configuration descriptor is writable at a lower security tier.