CVE-2026-109161 PUBLISHED

Buffer Overflow in Digital I/O

Assigner: CERTVDE
Reserved: 12.10.2026 Published: 03.11.2026 Updated: 03.11.2026

Insufficient bounds checking in the Digital I/O function may allow a remote attacker with high privileges to cause a denial of service.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 4.9

CVSS 3.1

Vendor	Welotec
Product	TK100
Versions	Default: unaffected affected from 0.0.0 to 3.5.116 (excl.)

Vendor	Welotec
Product	TK500-v2
Versions	Default: unaffected affected from 0.0.0 to 1.0.124 (excl.)

Vendor	Welotec
Product	TK500-v3
Versions	Default: unaffected affected from 0.0.0 to 1.0.123 (excl.)

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE