Threats Tagged 'cve-2026-27703'
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Threats Tagged 'cve-2026-27703'
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CVE-2026-27703: CWE-787: Out-of-bounds Write in RIOT-OS RIOTCVE-2026-27703 0 CVE-2026-27703 is a high-severity out-of-bounds write vulnerability in RIOT-OS, an open-source operating system for IoT and embedded devices. The flaw exists in the default handler for the coap_well_known_core resource, which writes user-supplied option data into a fixed-size buffer without proper size validation. This can lead to corruption of adjacent stack memory, including critical control flow data such as return addresses. Exploitation can result in denial of service or arbitrary code execution without requiring authentication or user interaction. The vulnerability affects RIOT versions up to and including 2026. 01. Although no known exploits are currently reported in the wild, the ease of remote exploitation and potential impact on device integrity make this a significant threat. Organizations deploying RIOT-OS in IoT environments should prioritize patching and implement strict input validation and memory safety practices to mitigate risk. Join the discussion | CVE Database V5 | 03/11/2026, 19:38:02 UTC Added: 03/11/2026, 19:59:52 UTC |
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