Technology · Riot-Os
Riot-Os RIOT vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 5
- Exploited in the wild
- 0
About Riot-Os RIOT
RIOT is a small operating system for networked, memory-constrained systems with a focus on low-power wireless Internet of Things devices.
Latest Riot-Os RIOT vulnerabilities
- CVE-2026-49868: RIOT DHCPv6 client out-of-bounds heap readcriticalCVSS 9.8
- CVE-2026-102692: RIOT nanocoap integer overflow in Block2 option parsingcriticalCVSS 9.1
- CVE-2026-107838: RIOT nanocoap_fileserver assertion failure in response handlinghighCVSS 7.5EPSS 0.3%
- CVE-2026-107837: RIOT operating system out-of-bounds read in 6LoWPAN fragment handlinghighCVSS 8.2EPSS 0.4%
- CVE-2026-107836: RIOT nanoCoAP client buffer underflow in blockwise transferinfoEPSS 0.3%
- CVE-2026-22214: RIOT OS stack overflow in ethos serial frame parsercriticalCVSS 9.8EPSS 0.4%
- CVE-2026-22213: RIOT OS stack-based buffer overflow in tapslip6 utilitycriticalCVSS 9.8EPSS 0.4%
- CVE-2025-66647: RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…criticalCVSS 9.8EPSS 1.0%
- CVE-2025-66646: RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…highCVSS 7.5EPSS 0.7%
Most severe Riot-Os RIOT vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2025-66647: RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…criticalCVSS 9.8EPSS 1.0%
- CVE-2026-22214: RIOT OS stack overflow in ethos serial frame parsercriticalCVSS 9.8EPSS 0.4%
- CVE-2026-22213: RIOT OS stack-based buffer overflow in tapslip6 utilitycriticalCVSS 9.8EPSS 0.4%
- CVE-2026-49868: RIOT DHCPv6 client out-of-bounds heap readcriticalCVSS 9.8
- CVE-2026-102692: RIOT nanocoap integer overflow in Block2 option parsingcriticalCVSS 9.1
- CVE-2026-107837: RIOT operating system out-of-bounds read in 6LoWPAN fragment handlinghighCVSS 8.2EPSS 0.4%
- CVE-2025-66646: RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things…highCVSS 7.5EPSS 0.7%
- CVE-2026-107838: RIOT nanocoap_fileserver assertion failure in response handlinghighCVSS 7.5EPSS 0.3%
- CVE-2026-107836: RIOT nanoCoAP client buffer underflow in blockwise transferinfoEPSS 0.3%
Vulnerabilities per week
2 vulnerabilities in the last four weeks, down 33% on the four before (3). 2 critical against 0. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 3 | 0 | |
| 12 Oct 2026 | 2 | 2 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Riot-Os RIOT vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/riot)<a href="https://junglewise.ai/threats/technologies/riot"><img src="https://junglewise.ai/threats/technologies/riot/badge.svg" alt="Riot-Os RIOT vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/riot.json, and this page as text at https://junglewise.ai/threats/technologies/riot.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Riot-Os RIOT vulnerabilities", https://junglewise.ai/threats/technologies/riot, 9 November 2026.