Vulnerability in QNAP Qurouter
CVE-2025-62843
An improper restriction of communication channel to intended endpoints vulnerability has been reported to affect QHora. If an attacker gains physical access, they can then exploit the vulnerability to gain the privileges that were intended for the original endpoint. We have already fixed the vulnerability in the following version: QuRouter 2.6.3.009 and later
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- QNAP Qurouter — versions 2.6.0.239, 2.6.0.688, 2.6.1.028
- QNAP Systems Inc. Qurouter — versions 2.6.x
Weakness classification (CWE)
References
- www.qnap.com/en/security-advisory/qsa-26-12 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-62843?
- CVE-2025-62843 is a medium-severity vulnerability in QNAP Qurouter, classified under CWE-923. CVSS score: 6.8/10. Published 2026-03-20.
- How severe is CVE-2025-62843?
- Medium severity. CVSS v3 base score is 6.8 out of 10.