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.
Affected products
verysync: verysync
References5
- github.com/jjjjj-zr/jjjjjzr/issues/7 ExploitIssue TrackingThird Party Advisory
- github.com/jjjjj-zr/jjjjjzr/issues/7 ExploitIssue TrackingThird Party Advisory
- vuldb.com/?ctiid.334618 Permissions RequiredVDB Entry
- vuldb.com/?id.334618 Third Party AdvisoryVDB Entry
- vuldb.com/?submit.699533 Third Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 4.0
-
5.5
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 43 · as of 11 November 2026
- CWE
- CWE-200CWE-284
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.