Description
A vulnerability was detected in Verysync 微力同步 2.21.3. This affects an unknown function of the file /safebrowsing/clientreport/download?key=dummytoken of the component Web Administration Module. Performing manipulation results in information disclosure. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
References (4)
Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry
https://vuldb.com/?id.334618
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.334618
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.699533
Exploit, Issue Tracking, Third Party Advisory exploit
issue-tracking
https://github.com/jjjjj-zr/jjjjjzr/issues/7
Scores
CVSS v3
5.3
EPSS
0.0040
EPSS Percentile
31.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-200
CWE-284
Status
published
Products (1)
verysync/verysync
< 2.21.3
Published
Dec 07, 2025
Tracked Since
Feb 18, 2026