CVE-2015-2851

medium
Published 2015-05-30 ยท Modified 2026-05-06
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
6.8

Description

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.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

macos macOS Fixed 1 release
VersionStatusFixed in
โ€” Not affected โ€”

Application impact

VendorProductVersionsFixed
synologycloud_station1.1-2291
synologycloud_station2.0-2291
synologycloud_station2.0-2402
synologycloud_station2.1-2561
synologycloud_station2.1-2570
synologycloud_station2.1-2577
synologycloud_station3.0-3005
synologycloud_station3.0-3103
synologycloud_station3.0-3108
synologycloud_station3.0-3109
synologycloud_station3.0-3111
synologycloud_station3.1-3317
synologycloud_station3.1-3320

References

CWEs

CWE-264

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.