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CVE-2026-102692

9.1 · CRITICAL

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems.

Published Oct 16, 2026CWE-190EPSS 0.35%

Overview

CVE-2026-102692 is a critical-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, nanocoap accepts oversized CoAP Block2 option values without enforcing the 20-bit maximum block number, allowing block offset multiplication to overflow on 32-bit targets. The affected master baseline is commit aeeae69e; the verified fix is later on master and remains unreleased. The oversized value passes from coap_get_blockopt() to coap_block_slicer_init(). A remote CoAP client can send a malformed Block2 option that produces an invalid slice range and can cause out-of-bounds memory access, denial of service, or memory corruption. This vulnerability is fixed in 2026.07.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/RIOT-OS/RIOT/commit/6b283ace3565d931b3edff7e115d4f79339253b8GitHubgithub.com/RIOT-OS/RIOT/commit/ee1fa0ef91874494823d476392572aeefdbc6b74GitHubgithub.com/RIOT-OS/RIOT/releases/tag/2026.07GitHubgithub.com/RIOT-OS/RIOT/security/advisories/GHSA-8365-gj33-rgpf

How CyberStrike helps

Frequently asked questions

What is CVE-2026-102692?

CVE-2026-102692 is a critical-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-102692?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-102692?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-102692?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-102692 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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