CVE-2021-26561
Critical
Description
Stack-based buffer overflow vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.
SeverityCritical
CVSS9.0
Exploit probability—
ProductSynology Diskstation Manager
PublishedFeb 26, 2021
First seenFeb 26, 2021
Weakness typeCWE-121CWE-121
How to fix
Update
- synology diskstation_manager6.2.3-25426-3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| synology diskstation_manager | v < 6.2.3-25426-3 | 6.2.3-25426-3 |
| synology vs960hd_firmware | No range specified | — |
| synology skynas_firmware | No range specified | — |
| synology diskstation_manager_unified_controller | 3.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.