CVE-2026-10849 Heap out-of-bounds write in Zephyr hawkBit OTA client when terminating server response body

The hawkBit device management client in subsys/mgmt/hawkbit accumulates the body of an HTTP response from the update server into a heap buffer in responsejsoncb subsys/mgmt/hawkbit/hawkbit.c. The buffer is sized to hold the received body bytes but reserves no space for a terminating NUL. When the...

CVE-2026-10849

The CVE concerns the hawkBit OTA client in Zephyr (subsys/mgmt/hawkbit/hawkbit.c). A heap-based out-of-bounds write occurs when terminating the received HTTP body: the buffer holds the body but no space for a NUL, so response_data[downloaded_size] = '\0' writes past the allocation. This is trigge...

CVE-2026-10849 Heap out-of-bounds write in Zephyr hawkBit OTA client when terminating server response body

The hawkBit device management client in subsys/mgmt/hawkbit accumulates the body of an HTTP response from the update server into a heap buffer in responsejsoncb subsys/mgmt/hawkbit/hawkbit.c. The buffer is sized to hold the received body bytes but reserves no space for a terminating NUL. When the...

CVE-2026-10848

CVE-2026-10848 affects Zephyr’s OCPP 1.6 RPC message parser (parse_rpc_msg) in subsys/net/lib/ocpp. A custom extract_string_field() copies uid/action with strncpy(out_buf, token + 1, outlen - 1) and then scans with strchr(out_buf, '"'), risking an out-of-bounds read and a one-byte NUL write when ...

CVE-2026-10848 Out-of-bounds read in Zephyr OCPP 1.6 RPC message parser (parse_rpc_msg)

The OCPP 1.6 client in subsys/net/lib/ocpp parsed inbound WAMP RPC frames in parserpcmsg subsys/net/lib/ocpp/ocppj.c using a hand-rolled helper, extractstringfield, that copied the message's uid and action fields with strncpyoutbuf, token + 1, outlen - 1 and then scanned the result with...

CVE-2026-10848 Out-of-bounds read in Zephyr OCPP 1.6 RPC message parser (parse_rpc_msg)

The OCPP 1.6 client in subsys/net/lib/ocpp parsed inbound WAMP RPC frames in parserpcmsg subsys/net/lib/ocpp/ocppj.c using a hand-rolled helper, extractstringfield, that copied the message's uid and action fields with strncpyoutbuf, token + 1, outlen - 1 and then scanned the result with...

CVE-2026-10848 Out-of-bounds read in Zephyr OCPP 1.6 RPC message parser (parse_rpc_msg)

The OCPP 1.6 client in subsys/net/lib/ocpp parsed inbound WAMP RPC frames in parserpcmsg subsys/net/lib/ocpp/ocppj.c using a hand-rolled helper, extractstringfield, that copied the message's uid and action fields with strncpyoutbuf, token + 1, outlen - 1 and then scanned the result with...

CVE-2026-10774

Zephyr's Bluetooth Mesh subnet key management leaks one PSA Crypto key slot on every subnet-key teardown. In subsys/bluetooth/mesh/subnet.c, netkeyscreate imports the Private Beacon Key into a PSA key slot under CONFIGBTMESHPRIVBEACONS enabled by default, but subnetkeysdestroy guarded the matchin...

CVE-2026-10774

Zephyr's Bluetooth Mesh subnet key management leaks one PSA Crypto key slot on every subnet-key teardown. In subsys/bluetooth/mesh/subnet.c, netkeyscreate imports the Private Beacon Key into a PSA key slot under CONFIGBTMESHPRIVBEACONS enabled by default, but subnetkeysdestroy guarded the matchin...

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 /...

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 /...

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-2026-10686

Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6routepacket subsys/net/ip were affected: the explicit-route path netroutepacket and the on-link cross-interface path netroutepacketif. Each set the packet...

CVE-2026-10686

Zephyr IPv6 forwarding path has a bug where hop-limit is not decremented in both ipv6_route_packet() branches (explicit-route net_route_packet() and on-link net_route_packet_if()). This causes routed unicast packets to be forwarded indefinitely, enabling a potential on-path attacker to induce a p...

CVE-2026-10686 Missing hop-limit decrement on IPv6 forwarding path allows unbounded packet looping (DoS) in Zephyr routers

Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6routepacket subsys/net/ip were affected: the explicit-route path netroutepacket and the on-link cross-interface path netroutepacketif. Each set the packet...

CVE-2026-10686 Missing hop-limit decrement on IPv6 forwarding path allows unbounded packet looping (DoS) in Zephyr routers

Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6routepacket subsys/net/ip were affected: the explicit-route path netroutepacket and the on-link cross-interface path netroutepacketif. Each set the packet...

CVE-2026-10685

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...

CVE-2026-10685

CVE-2026-10685 : In Zephyr, the GATT client CCC-write response handler gatt_write_ccc_rsp() may call the application’s params->subscribe() after already invoking params->notify(conn, params, NULL, 0). A NULL data notify signals termination; calling subscribe() on the same bt_gatt_subscribe_...