CVE-2026-22214 (GCVE-0-2026-22214)
Vulnerability from cvelistv5 – Published: 2026-01-12 23:03 – Updated: 2026-07-14 15:53
VLAI
EPSS
VEX
Title
RIOT OS <= 2026.01-devel-317 Stack-Based Buffer Overflow in ethos Serial Frame Parser
Summary
RIOT OS versions up to and including 2026.01-devel-317 contain a stack-based buffer overflow vulnerability in the ethos utility due to missing bounds checking when processing incoming serial frame data. The vulnerability occurs in the _handle_char() function, where incoming frame bytes are appended to a fixed-size stack buffer without verifying that the current write index remains within bounds. An attacker capable of sending crafted serial or TCP-framed input can cause the current write index to exceed the buffer size, resulting in a write past the end of the stack buffer. This condition leads to memory corruption and application crash.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-13 18:50 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://seclists.org/fulldisclosure/2026/Jan/16 | technical-descriptionexploit |
| https://www.riot-os.org/ | product |
| https://github.com/RIOT-OS/RIOT | product |
| https://www.vulncheck.com/advisories/riot-os-stac… | third-party-advisory |
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