TI-2026-17822 Aliases CVE-2026-22212 GHSA-x7h6-xxfr-j6pv

TinyOS <= 2.1.2 Stack-Based Buffer Overflow in mcp2200gpio

MEDIUM 55CWE-121Published 2026-01-12 · Updated 2026-07-14

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

TinyOS versions up to and including 2.1.2 contain a stack-based buffer overflow vulnerability in the mcp2200gpio utility. The vulnerability is caused by unsafe use of strcpy() and strcat() functions when constructing device paths during automatic device discovery. A local attacker can exploit this by creating specially crafted filenames under /dev/usb/, leading to stack memory corruption and application crashes.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0014 3rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TinyOS	TinyOS	up to 2.1.2	—	No fix listed	CNA

TinyOS VendorTinyOS Affected up to 2.1.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-22212
2026-10-03 Alias added: GHSA-x7h6-xxfr-j6pv

References

Exploit 1

https://seclists.org/fulldisclosure/2026/Jan/14

Other 1

https://github.com/tinyos/tinyos-main

TI-2026-17821 TinyOS <= 2.1.2 Global Buffer Overflow in printfUART CVSS 4.0MEDIUM 5.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences