Arbitrary file upload in Verysync
CVE-2025-14199
A flaw has been found in Verysync 微力同步 up to 2.21.3. This impacts an unknown function of the file /rest/f/api/resources/f96956469e7be39d/tmp/text.txt?override=false of the component Web Administration Module. Executing manipulation can lead to unrestricted upload. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (27.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Verysync
- Verysync 微力同步 — versions 2.21.0, 2.21.1, 2.21.2
Weakness classification (CWE)
References
- vuldb.com/ (VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/jjjjj-zr/jjjjjzr/issues/10 (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
Frequently asked questions
- What is CVE-2025-14199?
- CVE-2025-14199 is a medium-severity vulnerability in Verysync, classified under Improper Access Control. CVSS score: 6.3/10. Published 2025-12-07.
- How severe is CVE-2025-14199?
- Medium severity. CVSS v3 base score is 6.3 out of 10.