Zephyr
Source repositories
CVEs (223)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-11893 | Med | 0.31 | 5.9 | 0.00 | Aug 11, 2026 | The Bluetooth HCI driver for Bouffalo Lab on-chip BLE controllers (BL60x/BL70x/BL61x), bt_bflb_send() in drivers/bluetooth/hci/hci_bflb.c, violates the bt_hci_driver_api.send() buffer-ownership contract. That contract (documented at include/zephyr/drivers/bluetooth.h) requires… | ||
| CVE-2026-10686 | Med | 0.31 | 5.8 | 0.00 | Jul 31, 2026 | Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6_route_packet() (subsys/net/ip) were affected: the explicit-route path (net_route_packet()) and the on-link cross-interface path… | ||
| CVE-2026-10638 | Med | 0.31 | 5.9 | 0.00 | Jun 16, 2026 | subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data(). In icmpv6_handle_echo_request() and net_icmpv6_send_error(), the post-send statistics update calls net_pkt_iface(reply)/net_pkt_iface(pkt) on the just-sent… | ||
| CVE-2026-10637 | Med | 0.31 | 5.9 | 0.00 | Jun 16, 2026 | subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully. Per the network stack's ownership contract (include/zephyr/net/net_core.h, and the explicit warning in subsys/net/ip/net_core.c:453-460 'do not… | ||
| CVE-2026-7007 | Med | 0.30 | 4.6 | 0.00 | Jul 24, 2026 | The Zephyr ext2 file system validates the on-disk superblock in ext2_verify_disk_superblock() (subsys/fs/ext2/ext2_impl.c) before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields… | ||
| CVE-2026-20435 | Med | 0.30 | 4.6 | 0.00 | Mar 2, 2026 | In preloader, there is a possible read of device unique identifiers due to a logic error. This could lead to local information disclosure, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for… | ||
| CVE-2026-10674 | Med | 0.29 | 5.5 | 0.00 | Jul 21, 2026 | The NXP LPUART serial driver (drivers/serial/uart_mcux_lpuart.c), when CONFIG_UART_USE_RUNTIME_CONFIGURE is enabled, called LPUART_Deinit() at the start of mcux_lpuart_configure(), which disables the LPUART peripheral clocks. The requested configuration is validated only… | ||
| CVE-2023-5779 | Med | 0.29 | 4.4 | 0.00 | Feb 18, 2024 | can: out of bounds in remove_rx_filter function | ||
| CVE-2023-5139 | Med | 0.29 | 4.4 | 0.00 | Oct 26, 2023 | Potential buffer overflow vulnerability at the following location in the Zephyr STM32 Crypto driver | ||
| CVE-2026-15460 | Med | 0.28 | 5.4 | 0.00 | Sep 9, 2026 | The Bluetooth Classic (BR/EDR) L2CAP receive handler bt_l2cap_br_recv() in subsys/bluetooth/host/classic/l2cap_br.c dispatched inbound data PDUs based only on the destination channel ID, without checking that the target channel had reached the BT_L2CAP_CONNECTED state. A dynamic… | ||
| CVE-2026-14368 | Med | 0.28 | 5.4 | 0.00 | Aug 31, 2026 | The LwM2M JSON content formatter's get_string() in subsys/net/lib/lwm2m/lwm2m_rw_json.c copies a parsed JSON string into a caller-supplied buffer and NUL-terminates it. The length guard used if (string_length > buflen), which accepts a string whose length is exactly buflen.… | ||
| CVE-2026-13481 | Med | 0.28 | 5.4 | 0.00 | Aug 26, 2026 | The IEEE 1588 PTP management-message parser in subsys/net/lib/ptp/tlv.c mishandles the PTP_MGMT_TIME management id. In tlv_mgmt_post_recv(), the PTP_MGMT_TIME case casts mgmt_tlv->data to a 10-byte struct ptp_timestamp and reads it (then byte-swaps and writes it back) without… | ||
| CVE-2026-10773 | Med | 0.28 | 5.4 | 0.00 | Aug 1, 2026 | The DHCPv4 client helper net_dhcpv4_msg_type_name() in subsys/net/lib/dhcpv4/dhcpv4.c indexes a static 8-element const char * name table after a faulty bounds check. The guard used msg_type <= sizeof(name) instead of msg_type <= ARRAY_SIZE(name); sizeof returns the byte size of… | ||
| CVE-2025-10457 | Med | 0.28 | 4.3 | 0.00 | Sep 19, 2025 | The function responsible for handling BLE connection responses does not verify whether a response is expected—that is, whether the device has initiated a connection request. Instead, it relies solely on identifier matching. | ||
| CVE-2021-3432 | Med | 0.28 | 4.3 | 0.01 | Jun 28, 2022 | Invalid interval in CONNECT_IND leads to Division by Zero. Zephyr versions >= v1.14.0 Divide By Zero (CWE-369). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7364-p4wc-8mj4 | ||
| CVE-2021-3431 | Med | 0.28 | 4.3 | 0.01 | Jun 28, 2022 | Assertion reachable with repeated LL_FEATURE_REQ. Zephyr versions >= v2.5.0 contain Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7548-5m6f-mqv9 | ||
| CVE-2021-3455 | Med | 0.28 | 4.3 | 0.01 | Oct 19, 2021 | Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp | ||
| CVE-2021-3454 | Med | 0.28 | 4.3 | 0.01 | Oct 19, 2021 | Truncated L2CAP K-frame causes assertion failure. Zephyr versions >= 2.4.0, >= v.2.50 contain Improper Handling of Length Parameter Inconsistency (CWE-130), Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/G… | ||
| CVE-2021-3436 | Med | 0.28 | 4.3 | 0.01 | Oct 5, 2021 | BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see… | ||
| CVE-2020-10069 | Med | 0.28 | 4.3 | 0.00 | May 25, 2021 | Zephyr Bluetooth unchecked packet data results in denial of service. Zephyr versions >= v1.14.2, >= v2.2.0 contain Improper Handling of Parameters (CWE-233). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-f6vh-7v4x-8fjp |
- risk 0.31cvss 5.9epss 0.00
The Bluetooth HCI driver for Bouffalo Lab on-chip BLE controllers (BL60x/BL70x/BL61x), bt_bflb_send() in drivers/bluetooth/hci/hci_bflb.c, violates the bt_hci_driver_api.send() buffer-ownership contract. That contract (documented at include/zephyr/drivers/bluetooth.h) requires…
- risk 0.31cvss 5.8epss 0.00
Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6_route_packet() (subsys/net/ip) were affected: the explicit-route path (net_route_packet()) and the on-link cross-interface path…
- risk 0.31cvss 5.9epss 0.00
subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data(). In icmpv6_handle_echo_request() and net_icmpv6_send_error(), the post-send statistics update calls net_pkt_iface(reply)/net_pkt_iface(pkt) on the just-sent…
- risk 0.31cvss 5.9epss 0.00
subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully. Per the network stack's ownership contract (include/zephyr/net/net_core.h, and the explicit warning in subsys/net/ip/net_core.c:453-460 'do not…
- risk 0.30cvss 4.6epss 0.00
The Zephyr ext2 file system validates the on-disk superblock in ext2_verify_disk_superblock() (subsys/fs/ext2/ext2_impl.c) before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields…
- risk 0.30cvss 4.6epss 0.00
In preloader, there is a possible read of device unique identifiers due to a logic error. This could lead to local information disclosure, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for…
- risk 0.29cvss 5.5epss 0.00
The NXP LPUART serial driver (drivers/serial/uart_mcux_lpuart.c), when CONFIG_UART_USE_RUNTIME_CONFIGURE is enabled, called LPUART_Deinit() at the start of mcux_lpuart_configure(), which disables the LPUART peripheral clocks. The requested configuration is validated only…
- risk 0.29cvss 4.4epss 0.00
can: out of bounds in remove_rx_filter function
- risk 0.29cvss 4.4epss 0.00
Potential buffer overflow vulnerability at the following location in the Zephyr STM32 Crypto driver
- risk 0.28cvss 5.4epss 0.00
The Bluetooth Classic (BR/EDR) L2CAP receive handler bt_l2cap_br_recv() in subsys/bluetooth/host/classic/l2cap_br.c dispatched inbound data PDUs based only on the destination channel ID, without checking that the target channel had reached the BT_L2CAP_CONNECTED state. A dynamic…
- risk 0.28cvss 5.4epss 0.00
The LwM2M JSON content formatter's get_string() in subsys/net/lib/lwm2m/lwm2m_rw_json.c copies a parsed JSON string into a caller-supplied buffer and NUL-terminates it. The length guard used if (string_length > buflen), which accepts a string whose length is exactly buflen.…
- risk 0.28cvss 5.4epss 0.00
The IEEE 1588 PTP management-message parser in subsys/net/lib/ptp/tlv.c mishandles the PTP_MGMT_TIME management id. In tlv_mgmt_post_recv(), the PTP_MGMT_TIME case casts mgmt_tlv->data to a 10-byte struct ptp_timestamp and reads it (then byte-swaps and writes it back) without…
- risk 0.28cvss 5.4epss 0.00
The DHCPv4 client helper net_dhcpv4_msg_type_name() in subsys/net/lib/dhcpv4/dhcpv4.c indexes a static 8-element const char * name table after a faulty bounds check. The guard used msg_type <= sizeof(name) instead of msg_type <= ARRAY_SIZE(name); sizeof returns the byte size of…
- risk 0.28cvss 4.3epss 0.00
The function responsible for handling BLE connection responses does not verify whether a response is expected—that is, whether the device has initiated a connection request. Instead, it relies solely on identifier matching.
- risk 0.28cvss 4.3epss 0.01
Invalid interval in CONNECT_IND leads to Division by Zero. Zephyr versions >= v1.14.0 Divide By Zero (CWE-369). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7364-p4wc-8mj4
- risk 0.28cvss 4.3epss 0.01
Assertion reachable with repeated LL_FEATURE_REQ. Zephyr versions >= v2.5.0 contain Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7548-5m6f-mqv9
- risk 0.28cvss 4.3epss 0.01
Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp
- risk 0.28cvss 4.3epss 0.01
Truncated L2CAP K-frame causes assertion failure. Zephyr versions >= 2.4.0, >= v.2.50 contain Improper Handling of Length Parameter Inconsistency (CWE-130), Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/G…
- risk 0.28cvss 4.3epss 0.01
BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see…
- risk 0.28cvss 4.3epss 0.00
Zephyr Bluetooth unchecked packet data results in denial of service. Zephyr versions >= v1.14.2, >= v2.2.0 contain Improper Handling of Parameters (CWE-233). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-f6vh-7v4x-8fjp
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