Contiki-ng
Contiki-ng: vulnerabilities and CVEs
Contiki-ng has 45 published vulnerabilities, 3 of them in the last 12 months. 21 are rated critical and 0 are listed by CISA as actively exploited.
CVEs45
Last 12 months3
Critical21
Actively exploited0
All vulnerabilities in the catalogue →⭐ Follow this technology
Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-5856 | High (7.1) | 0.29% | — | Aug 6, 2026 | Contiki-NG's DNS/mDNS resolver skip_name() in os/services/resolv/resolv.c walks DNS wire-format name labels with no packet-boundary check, and the caller in newdata() invokes it in a loop iterating nquestions times from… |
| CVE-2026-5855 | High (8.7) | 0.72% | — | Aug 6, 2026 | Contiki-NG's LwM2M TLV parser lwm2m_tlv_read() in os/services/lwm2m/lwm2m-tlv.c ignores its caller-supplied buffer length argument and reads up to six bytes from the input buffer with no bounds check. The caller in… |
| CVE-2026-5857 | Critical (9.2) | 0.92% | — | Aug 6, 2026 | Contiki-NG's MQTT client parse_publish_vhdr() in os/net/app-layer/mqtt/mqtt.c sets topic_len_received=1 before checking topic_len against the 64-byte limit, so an over-length topic returns early but leaves the flag set.… |
| CVE-2024-47181 | High (7.5) | 0.58% | — | Nov 27, 2024 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. An unaligned memory access can be triggered in the two RPL implementations of the Contiki-NG operating system. The problem can occur when… |
| CVE-2024-41126 | Critical (9.6) | 0.29% | — | Nov 27, 2024 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte can be triggered when sending a packet to a device running the Contiki-NG operating system with SNMP… |
| CVE-2024-41125 | Critical (9.6) | 0.29% | — | Nov 27, 2024 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte can be triggered when sending a packet to a device running the Contiki-NG operating system with SNMP… |
| CVE-2023-29001 | High (8.7) | 0.56% | — | Nov 27, 2024 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. The Contiki-NG operating system processes source routing headers (SRH) in its two alternative RPL protocol implementations. The IPv6… |
| CVE-2023-50927 | High (7.5) | 0.51% | — | Feb 14, 2024 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An attacker can trigger out-of-bounds reads in the RPL-Lite implementation of the RPL protocol in the Contiki-NG operating… |
| CVE-2023-50926 | High (7.5) | 0.53% | — | Feb 14, 2024 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be caused by an incoming DIO message when using the RPL-Lite implementation in the Contiki-NG… |
| CVE-2023-48229 | High (7.6) | 0.39% | — | Feb 14, 2024 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds write exists in the driver for IEEE 802.15.4 radios on nRF platforms in the Contiki-NG operating system.… |
| CVE-2020-27634 | Critical (9.1) | 1.7% | — | Oct 10, 2023 | In Contiki 4.5, TCP ISNs are improperly random. |
| CVE-2023-37459 | Medium (5.3) | 0.46% | — | Sep 15, 2023 | Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with… |
| CVE-2023-37281 | Medium (5.3) | 0.46% | — | Sep 15, 2023 | Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet… |
| CVE-2023-34101 | Critical (9.1) | 0.51% | — | Jun 14, 2023 | Contiki-NG is an operating system for internet of things devices. In version 4.8 and prior, when processing ICMP DAO packets in the `dao_input_storing` function, the Contiki-NG OS does not verify that the packet buffer… |
| CVE-2023-34100 | Medium (6.5) | 0.44% | — | Jun 9, 2023 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from… |
| CVE-2023-31129 | Critical (9.8) | 0.64% | — | May 8, 2023 | The Contiki-NG operating system versions 4.8 and prior can be triggered to dereference a NULL pointer in the message handling code for IPv6 router solicitiations. Contiki-NG contains an implementation of IPv6 Neighbor… |
| CVE-2023-30546 | High (7.5) | 0.64% | — | Apr 26, 2023 | Contiki-NG is an operating system for Internet of Things devices. An off-by-one error can be triggered in the Antelope database management system in the Contiki-NG operating system in versions 4.8 and prior. The problem… |
| CVE-2023-28116 | Critical (9.8) | 0.69% | — | Mar 17, 2023 | Contiki-NG is an open-source, cross-platform operating system for internet of things (IoT) devices. In versions 4.8 and prior, an out-of-bounds write can occur in the BLE L2CAP module of the Contiki-NG operating system.… |
| CVE-2023-23609 | High (7.4) | 0.35% | — | Jan 26, 2023 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to and including 4.8 are vulnerable to an out-of-bounds write that can occur in the BLE-L2CAP module. The… |
| CVE-2022-41972 | Medium (6.5) | 0.21% | — | Dec 16, 2022 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to 4.9 contain a NULL Pointer Dereference in BLE L2CAP module. The Contiki-NG operating system for IoT… |
| CVE-2022-41873 | Medium (5.4) | 0.26% | — | Nov 11, 2022 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to 4.9 are vulnerable to an Out-of-bounds read. While processing the L2CAP protocol, the Bluetooth Low Energy… |
| CVE-2022-36054 | High (8.8) | 0.76% | — | Sep 1, 2022 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. The 6LoWPAN implementation in the Contiki-NG operating system (file os/net/ipv6/sicslowpan.c) contains an input function… |
| CVE-2022-36053 | High (8.8) | 0.61% | — | Sep 1, 2022 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. The low-power IPv6 network stack of Contiki-NG has a buffer module (os/net/ipv6/uipbuf.c) that processes IPv6 extension… |
| CVE-2022-36052 | High (8.8) | 0.64% | — | Sep 1, 2022 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. The 6LoWPAN implementation in Contiki-NG may cast a UDP header structure at a certain offset in a packet buffer. The code… |
| CVE-2022-35927 | Critical (9.8) | 2.1% | — | Aug 4, 2022 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system, an incoming DODAG Information Option (DIO) control… |
| CVE-2022-35926 | High (7.5) | 1.2% | — | Aug 4, 2022 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. Because of insufficient validation of IPv6 neighbor discovery options in Contiki-NG, attackers can send neighbor solicitation packets that… |
| CVE-2021-32771 | High (8.1) | 1.3% | — | Aug 4, 2022 | Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in… |
| CVE-2020-12140 | High (8.8) | 0.95% | — | Dec 7, 2021 | A buffer overflow in os/net/mac/ble/ble-l2cap.c in the BLE stack in Contiki-NG 4.4 and earlier allows an attacker to execute arbitrary code via malicious L2CAP frames. |
| CVE-2020-12141 | Critical (9.1) | 1.6% | — | Oct 19, 2021 | An out-of-bounds read in the SNMP stack in Contiki-NG 4.4 and earlier allows an attacker to cause a denial of service and potentially disclose information via crafted SNMP packets to snmp_ber_decode_string_len_buffer in… |
| CVE-2021-21410 | Critical (9.1) | 1.2% | — | Jun 18, 2021 | Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header… |
🎯 How it gets exploited (ATT&CK techniques)
Number of CVEs of this technology mapped to each exploitation or primary-impact technique.