CVE-2025-68404 PUBLISHED

vcs_pentest Race Condition Authentication Bypass Vulnerability in QuRouter management interface

Assigner: qnap
Reserved: 17.12.2025 Published: 15.10.2026 Updated: 15.10.2026

A time-of-check time-of-use (toctou) race condition vulnerability has been reported to affect QuRouter. If exploited, the vulnerability could allow remote attackers to compromise the security of the system.

We have already fixed the vulnerability in the following version: QuRouter 2.6.4.001 and later

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.5

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

CVSS 4.0

Product Status

Vendor	QNAP Systems Inc.
Product	QuRouter
Versions	Default: unaffected affected from 2.6.x to 2.6.4.001 (excl.)

Solutions

We have already fixed the vulnerability in the following version: QuRouter 2.6.4.001 and later

Credits

rewhile test finder

References

https://www.qnap.com/en/release-notes/qurouter/overview/2.7

Problem Types

CWE-367 CWE

Impacts

CAPEC-29