{"schema_version":1,"title":"Riot-Os RIOT vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in Riot-Os RIOT: 0 in the last 7 days and 5 in the last 90 days, 5 of them critical and 0 exploited in the wild. The most recent, CVE-2026-49868, was published on 16 October 2026. 2 vulnerabilities in the last four weeks, down 33% on the four before (3). 2 critical against 0.","url":"https://junglewise.ai/threats/technologies/riot","json_url":"https://junglewise.ai/threats/technologies/riot.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/riot","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":3,"all_time":9,"critical":5,"exploited":0,"last_7_days":0,"last_30_days":2,"last_90_days":5,"last_365_days":9},"latest":[{"cve":"CVE-2026-49868","cvss":9.8,"slug":"cve-2026-49868-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT DHCPv6 client out-of-bounds heap read","severity":"critical","exploited":false,"published_at":"2026-10-16T17:17:34.963+00:00","url":"https://junglewise.ai/threats/cve-2026-49868-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-102692","cvss":9.1,"slug":"cve-2026-102692-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanocoap integer overflow in Block2 option parsing","severity":"critical","exploited":false,"published_at":"2026-10-16T17:17:16.98+00:00","url":"https://junglewise.ai/threats/cve-2026-102692-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107838","cvss":7.5,"epss":0.0034,"slug":"cve-2026-107838-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanocoap_fileserver assertion failure in response handling","severity":"high","exploited":false,"published_at":"2026-10-09T18:17:05.64+00:00","url":"https://junglewise.ai/threats/cve-2026-107838-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107837","cvss":8.2,"epss":0.0038,"slug":"cve-2026-107837-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT operating system out-of-bounds read in 6LoWPAN fragment handling","severity":"high","exploited":false,"published_at":"2026-10-09T18:17:05.483+00:00","url":"https://junglewise.ai/threats/cve-2026-107837-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107836","epss":0.0029,"slug":"cve-2026-107836-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanoCoAP client buffer underflow in blockwise transfer","severity":"info","exploited":false,"published_at":"2026-10-09T18:17:05.31+00:00","url":"https://junglewise.ai/threats/cve-2026-107836-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-22214","cvss":9.8,"epss":0.004,"slug":"cve-2026-22214-riot-os-stack-overflow-in-ethos-serial-frame-parser","title":"RIOT OS stack overflow in ethos serial frame parser","severity":"critical","exploited":false,"published_at":"2026-01-12T23:15:52.453+00:00","url":"https://junglewise.ai/threats/cve-2026-22214-riot-os-stack-overflow-in-ethos-serial-frame-parser"},{"cve":"CVE-2026-22213","cvss":9.8,"epss":0.0036,"slug":"cve-2026-22213-riot-os-stack-based-buffer-overflow-in-tapslip6-utility","title":"RIOT OS stack-based buffer overflow in tapslip6 utility","severity":"critical","exploited":false,"published_at":"2026-01-12T23:15:52.3+00:00","url":"https://junglewise.ai/threats/cve-2026-22213-riot-os-stack-based-buffer-overflow-in-tapslip6-utility"},{"cve":"CVE-2025-66647","cvss":9.8,"epss":0.0097,"slug":"cve-2025-66647-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…","severity":"critical","exploited":false,"published_at":"2025-12-17T21:16:15.483+00:00","url":"https://junglewise.ai/threats/cve-2025-66647-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2025-66646","cvss":7.5,"epss":0.0068,"slug":"cve-2025-66646-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…","severity":"high","exploited":false,"published_at":"2025-12-17T20:15:56.17+00:00","url":"https://junglewise.ai/threats/cve-2025-66646-riot-is-an-open-source-microcontroller-operating-system-designed"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-10-12","critical":2,"exploited":0,"vulnerabilities":2},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Riot-Os RIOT","slug":"riot","vendor":{"hub":true,"name":"Riot-Os","slug":"riot-os","url":"https://junglewise.ai/threats/vendors/riot-os"},"aliases":[],"category":"operating-system","homepage":"https://www.riot-os.org/","repo_url":"https://github.com/RIOT-OS/RIOT","description":"RIOT is a small operating system for networked, memory-constrained systems with a focus on low-power wireless Internet of Things devices.","url":"https://junglewise.ai/threats/technologies/riot"},"most_severe":[{"cve":"CVE-2025-66647","cvss":9.8,"epss":0.0097,"slug":"cve-2025-66647-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…","severity":"critical","exploited":false,"published_at":"2025-12-17T21:16:15.483+00:00","url":"https://junglewise.ai/threats/cve-2025-66647-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-22214","cvss":9.8,"epss":0.004,"slug":"cve-2026-22214-riot-os-stack-overflow-in-ethos-serial-frame-parser","title":"RIOT OS stack overflow in ethos serial frame parser","severity":"critical","exploited":false,"published_at":"2026-01-12T23:15:52.453+00:00","url":"https://junglewise.ai/threats/cve-2026-22214-riot-os-stack-overflow-in-ethos-serial-frame-parser"},{"cve":"CVE-2026-22213","cvss":9.8,"epss":0.0036,"slug":"cve-2026-22213-riot-os-stack-based-buffer-overflow-in-tapslip6-utility","title":"RIOT OS stack-based buffer overflow in tapslip6 utility","severity":"critical","exploited":false,"published_at":"2026-01-12T23:15:52.3+00:00","url":"https://junglewise.ai/threats/cve-2026-22213-riot-os-stack-based-buffer-overflow-in-tapslip6-utility"},{"cve":"CVE-2026-49868","cvss":9.8,"slug":"cve-2026-49868-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT DHCPv6 client out-of-bounds heap read","severity":"critical","exploited":false,"published_at":"2026-10-16T17:17:34.963+00:00","url":"https://junglewise.ai/threats/cve-2026-49868-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-102692","cvss":9.1,"slug":"cve-2026-102692-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanocoap integer overflow in Block2 option parsing","severity":"critical","exploited":false,"published_at":"2026-10-16T17:17:16.98+00:00","url":"https://junglewise.ai/threats/cve-2026-102692-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107837","cvss":8.2,"epss":0.0038,"slug":"cve-2026-107837-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT operating system out-of-bounds read in 6LoWPAN fragment handling","severity":"high","exploited":false,"published_at":"2026-10-09T18:17:05.483+00:00","url":"https://junglewise.ai/threats/cve-2026-107837-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2025-66646","cvss":7.5,"epss":0.0068,"slug":"cve-2025-66646-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…","severity":"high","exploited":false,"published_at":"2025-12-17T20:15:56.17+00:00","url":"https://junglewise.ai/threats/cve-2025-66646-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107838","cvss":7.5,"epss":0.0034,"slug":"cve-2026-107838-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanocoap_fileserver assertion failure in response handling","severity":"high","exploited":false,"published_at":"2026-10-09T18:17:05.64+00:00","url":"https://junglewise.ai/threats/cve-2026-107838-riot-is-an-open-source-microcontroller-operating-system-designed"},{"cve":"CVE-2026-107836","epss":0.0029,"slug":"cve-2026-107836-riot-is-an-open-source-microcontroller-operating-system-designed","title":"RIOT nanoCoAP client buffer underflow in blockwise transfer","severity":"info","exploited":false,"published_at":"2026-10-09T18:17:05.31+00:00","url":"https://junglewise.ai/threats/cve-2026-107836-riot-is-an-open-source-microcontroller-operating-system-designed"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}