Medium 6.8Published May 30, 2015

CVE-2015-2851client_chown in the sync client in Synology Cloud Station 1.1-2291 through 3.1-3320 on OS X allows local users to change the ownership of arbitrary files, and consequently obtain root access, by spec…

Updated under an hour ago (Nov 2, 2026, 12:20 AM ET)

Does this affect you?

It affects synology cloud_station. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for synology cloud_station Exploited in the last 30 days

client_chown in the sync client in Synology Cloud Station 1.1-2291 through 3.1-3320 on OS X allows local users to change the ownership of arbitrary files, and consequently obtain root access, by specifying a filename.

CVSS: 6.8 MEDIUM (v2.0, NVD)AV:L/AC:L/Au:S/C:C/I:C/A:C
Weakness (CWE): CWE-264
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

synology cloud_station synology:cloud_station	1.1-2291; 2.0-2291; 2.0-2402; 2.1-2561; 2.1-2570; 2.1-2577; 3.0-3005; 3.0-3103; and 5 more ranges	NVD

References

References

http://www.kb.cert.org/vuls/id/551972	third-party-advisory, us-government-resource
http://www.kb.cert.org/vuls/id/BLUU-9VBU45	third-party-advisory, us-government-resource
http://www.securityfocus.com/bid/74826

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.