CVE-2026-22214 is a critical stack-based buffer overflow vulnerability affecting RIOT OS versions up to and including 2026.01-devel-317, specifically within the ethos utility's _handle_char() function. This flaw allows an unauthenticated attacker to cause memory corruption and application crashes by sending specially crafted serial or TCP-framed input due to missing bounds checking. Rated with a CVSS score of 9.8 (CRITICAL), it presents a low-complexity attack vector with high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2025.10CPE matchmatch criteria | cpe:2.3:o:riot-os:riot:*:*:*:*:*:*:*:* | ||
2026.01CPE matchmatch criteria | cpe:2.3:o:riot-os:riot:2026.01:devel:*:*:*:*:*:* | ||
2026.01CPE matchmatch criteria | cpe:2.3:o:riot-os:riot:2026.01:rc1:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.