CVE-2024-47181: contiki-ng — Fix

Description

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 either one of these RPL implementations is enabled and connected to an RPL instance. If an IPv6 packet containing an odd number of padded bytes before the RPL option, it can cause the rpl_ext_header_hbh_update function to read a 16-bit integer from an odd address. The impact of this unaligned read is architecture-dependent, but can potentially cause the system to crash. The problem has not been patched as of release 4.9, but will be included in the next release. One can apply the changes in Contiki-NG pull request #2962 to patch the system or wait for the next release.

Is your site exposed to CVE-2024-47181?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-704 CWE-704

Affected Products

Vendor	Product	Versions
contiki-ng	contiki-ng	< 4.9

References

Advisories & Patches

https://github.com/contiki-ng/contiki-ng/pull/2962 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-crjw-x84h-h6x3

Frequently Asked Questions

What is CVE-2024-47181? +

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 either one of these RPL implementations is enabled and connected to an RPL instance. If an IPv6 packet containing an odd number of padded bytes before the RPL option, it can cause the rpl_ext_header_hbh_update function to read a 16-bit integer from an odd address. The impact of this unaligned read is architecture-dependent, but can potentially cause the system to crash. The problem has not been patched as of release 4.9, but will be included in the next release. One can apply the changes in Contiki-NG pull request #2962 to patch the system or wait for the next release. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-47181? +

CVE-2024-47181 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-47181? +

CVE-2024-47181 affects products from contiki-ng, specifically: contiki-ng. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47181? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-54429

Polkadot Frontier is an Ethereum and EVM compatibility layer for Polkadot and Substrate. There are various account address types in …

CVE-2010-20115

Arcane Software’s Vermillion FTP Daemon (vftpd) versions up to and including 1.31 contains a memory corruption vulnerability triggered by a …

CVE-2025-41646 9.8

An unauthorized remote attacker can bypass the authentication of the affected software package by misusing an incorrect type conversion. This …

CVE-2024-5436 9.8

Type confusion in Snapchat LensCore could lead to denial of service or arbitrary code execution prior to version 12.88. We …

CVE-2025-41648 9.8

An unauthenticated remote attacker can bypass the login to the web application of the affected devices making it possible to …

CVE-2025-62494 8.8

A type confusion vulnerability exists in the handling of the string addition (+) operation within the QuickJS engine. * The …

CVE-2024-47181