CVE-2026-13213 Bluetooth HAS: NULL-pointer dereference DoS when a bonded peer reconnects before bt_has_register

The Hearing Access Service HAS GATT server in subsys/bluetooth/audio/has.c installs a connection-callback set unconditionally via BTCONNCBDEFINE, so securitychanged runs for every connection that establishes security even before the application has called bthasregister. The service attribute...

PT-2026-80937

The Hearing Access Service HAS GATT server in subsys/bluetooth/audio/has.c installs a connection-callback set unconditionally via BT CONN CB DEFINE, so security changed runs for every connection that establishes security even before the application has called bt has register. The service attribut...

CVE-2026-12236

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

CVE-2026-12236

The CVE concerns the Zephyr Bluetooth host GATT client, where parse_read_std_char_desc() can loop indefinitely if an attacker causes a peer to reply with rsp->len = 0 during BT_GATT_DISCOVER_STD_CHAR_DESC. The loop uses rsp->len to advance the pointer and decrement remaining length, but rsp...

CVE-2026-12236 Infinite loop (DoS) in Bluetooth GATT client parsing of Read-By-Type responses with zero data length

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

CVE-2026-12236 Infinite loop (DoS) in Bluetooth GATT client parsing of Read-By-Type responses with zero data length

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

EUVD-2026-58131

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

CVE-2026-12236 Infinite loop (DoS) in Bluetooth GATT client parsing of Read-By-Type responses with zero data length

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

PT-2026-71698

Name of the Vulnerable Software and Affected Versions affected versions not specified Description The Bluetooth host GATT client function parse read std char desc in subsys/bluetooth/host/gatt.c fails to validate the minimum value of the per-entry stride rsp-len received from a remote GATT server...

BLE UART exec

Send a command string over a BLE UART/NUS write characteristic and collect the notify response serial-over-GATT pivot. !/usr/bin/env python3 -- coding: utf-8 -- """Execute a command over BLE UART/NUS pivot channel.""" from kittysploit import from lib.protocols.ble.blesessionmixin import...

CVE-2026-10772

DUPLICATE This CVE Record has been rejected by the Zephyr Project CNA. CVE-2026-10772 was assigned to a vulnerability already covered by CVE-2026-2411, which was assigned earlier for the same defect: the Bluetooth GATT notify/indicate paths check the permissions of the Characteristic Declaration...

EUVD-2026-51869

Zephyr's Bluetooth host declares a GATT characteristic as two consecutive attributes: a Characteristic Declaration whose permission is hard-coded to BTGATTPERMREAD, and a Characteristic Value attribute that carries the application-specified security permissions e.g. BTGATTPERMREADENCRYPT /...

CVE-2026-2411 Bluetooth GATT notify/indicate enforces the wrong attribute's permissions, bypassing encryption/authentication requirements on characteristic values

Zephyr's Bluetooth host declares a GATT characteristic as two consecutive attributes: a Characteristic Declaration whose permission is hard-coded to BTGATTPERMREAD, and a Characteristic Value attribute that carries the application-specified security permissions e.g. BTGATTPERMREADENCRYPT /...

CVE-2026-2411 Bluetooth GATT notify/indicate enforces the wrong attribute's permissions, bypassing encryption/authentication requirements on characteristic values

Zephyr's Bluetooth host declares a GATT characteristic as two consecutive attributes: a Characteristic Declaration whose permission is hard-coded to BTGATTPERMREAD, and a Characteristic Value attribute that carries the application-specified security permissions e.g. BTGATTPERMREADENCRYPT /...

CVE-2026-2411

CVE-2026-2411 affects Zephyr’s Bluetooth host GATT: when a Characteristic Declaration is used with a value that requires encryption/authentication, the permission check erroneously evaluated the declaration instead of the value, allowing the Notification/Indicate path to bypass encryption require...

CVE-2026-2411: Incorrect Authorization

Zephyr's Bluetooth host declares a GATT characteristic as two consecutive attributes: a Characteristic Declaration whose permission is hard-coded to BTGATTPERMREAD, and a Characteristic Value attribute that carries the application-specified security permissions e.g. BTGATTPERMREADENCRYPT /...

PT-2026-67194

Name of the Vulnerable Software and Affected Versions Zephyr affected versions not specified Description Zephyr's Bluetooth host incorrectly handles security permission checks when sending notifications or indications. When a Characteristic Declaration attribute is used, the host evaluates the...

CVE-2026-10685 Use-after-free of GATT subscribe params in Bluetooth host CCC-write response handler

The Zephyr Bluetooth GATT client CCC-write response handler gattwritecccrsp in subsys/bluetooth/host/gatt.c invoked the application's params-subscribe callback after it had already called params-notifyconn, params, NULL, 0. Per the public GATT API, a notify callback with NULL data is the document...

CVE-2026-10685 Use-after-free of GATT subscribe params in Bluetooth host CCC-write response handler

The Zephyr Bluetooth GATT client CCC-write response handler gattwritecccrsp in subsys/bluetooth/host/gatt.c invoked the application's params-subscribe callback after it had already called params-notifyconn, params, NULL, 0. Per the public GATT API, a notify callback with NULL data is the document...

EUVD-2026-51554

The Zephyr Bluetooth GATT client CCC-write response handler gattwritecccrsp in subsys/bluetooth/host/gatt.c invoked the application's params-subscribe callback after it had already called params-notifyconn, params, NULL, 0. Per the public GATT API, a notify callback with NULL data is the document...