Vulnerability in QNAP Qsync Central
CVE-2025-30277
An improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- QNAP Qsync Central
- QNAP Systems Inc. Qsync Central — versions 4.5.x.x
Weakness classification (CWE)
References
- www.qnap.com/en/security-advisory/qsa-25-22 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-30277?
- CVE-2025-30277 is a high-severity vulnerability in QNAP Qsync Central, classified under Improper Certificate Validation. CVSS score: 8.8/10. Published 2025-08-29.
- How severe is CVE-2025-30277?
- High severity. CVSS v3 base score is 8.8 out of 10.