PT-2026-70059

Name of the Vulnerable Software and Affected Versions Zephyr ARM port affected versions not specified Description On the ARM port, enabling the hardware FPU via CONFIG FPU forces a Floating point ABI choice, defaulting to CONFIG FP HARDABI. Both FP HARDABI and FP SOFTABI allow the compiler to emi...

PT-2026-70061

Name of the Vulnerable Software and Affected Versions Zephyr affected versions not specified Description The USB DFU class implementation in the experimental device next USB device stack contains a NULL pointer dereference within the handle download function. This occurs when the handler processe...

CVE-2026-8718

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-11812

The UpdateHub management subsystem subsys/mgmt/updatehub/updatehub.c drives every update operation through a single file-scope ctx structure that holds the CoAP block context, payload buffer, status code, socket, and a one-element poll-fd array fds1. Access to ctx was not serialized, and preparef...

CVE-2026-8718

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-8718 Out-of-bounds write in DTLS peer Connection ID getsockopt (`TLS_DTLS_PEER_CID_VALUE`) in Zephyr net sockets/TLS

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-8718

CVE-2026-8718 affects Zephyr net sockets TLS with CONFIG_MBEDTLS_SSL_DTLS_CONNECTION_ID and an established DTLS session. tls_opt_dtls_peer_connection_id_value_get() passes optval to mbedtls_ssl_get_peer_cid() without ensuring the destination buffer is large enough (MBEDTLS_SSL_CID_OUT_LEN_MAX, de...

CVE-2026-8718 Out-of-bounds write in DTLS peer Connection ID getsockopt (`TLS_DTLS_PEER_CID_VALUE`) in Zephyr net sockets/TLS

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-11810

The UpdateHub firmware-update agent's probe handler zimplupdatehubprobe in subsys/mgmt/updatehub/updatehub.c parses the JSON metadata returned by the update server into a fixed two-level nested-array struct. After parsing it validates only the outer array length objectslen != 2 and then...

CVE-2026-11809

CVE-2026-11809 (Zephyr UpdateHub OTA client) : The UpdateHub probe in subsys/mgmt/updatehub/updatehub.c uses a second heap buffer (metadata_copy) via memcpy(metadata_copy, metadata, strlen(metadata)) without zeroing. This omits the terminating NUL, so a subsequent json_obj_parse(metadata_copy, st...

CVE-2026-11810 NULL-pointer dereference in UpdateHub OTA agent on empty inner metadata array (remote DoS)

The UpdateHub firmware-update agent's probe handler zimplupdatehubprobe in subsys/mgmt/updatehub/updatehub.c parses the JSON metadata returned by the update server into a fixed two-level nested-array struct. After parsing it validates only the outer array length objectslen != 2 and then...

CVE-2026-11810

CVE-2026-11810 affects Zephyr’s UpdateHub firmware-update agent. The probe handler z_impl_updatehub_probe() parses CoAP-provided JSON metadata into a two-level nested array; it only validates the outer array length and then dereferences objects[1].objects[0].objects.sha256sum with strlen() withou...

CVE-2026-11810 NULL-pointer dereference in UpdateHub OTA agent on empty inner metadata array (remote DoS)

The UpdateHub firmware-update agent's probe handler zimplupdatehubprobe in subsys/mgmt/updatehub/updatehub.c parses the JSON metadata returned by the update server into a fixed two-level nested-array struct. After parsing it validates only the outer array length objectslen != 2 and then...

PT-2026-69999

Name of the Vulnerable Software and Affected Versions Zephyr versions 3.5.0 and later Description An out-of-bounds write exists in the tls opt dtls peer connection id value get function within subsys/net/lib/sockets/sockets tls.c. This function handles the getsockoptSOL TLS, TLS DTLS PEER CID VAL...

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...