CVE-2015-2851
client_chown in the sync client in Synology Cloud Station 1.1-2291 through 3.1-3320 on OS X...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2015-2851- CVSS 2.0
- 6.8 Medium
AV:L/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2015-2851- Updated
- 2026-11-02
EUVDEUVD-2015-2939 No score
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.
- Record
EUVD-2015-2939- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-32rj-qg36-98x6 No score
client_chown in the sync client in Synology Cloud Station 1.1-2291 through 3.1-3320 on OS X...
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.
- Record
GHSA-32rj-qg36-98x6- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-2851 is a medium vulnerability (CVSS 6.8) in Synology Cloud Station, published May 30, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.