CVE-2016-6554
A remote network attacker can gain privileged access to a vulnerable device.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Synology NAS servers DS107, firmware version 3.1-1639 and prior, and DS116, DS213, firmware versions prior to 5.2-5644-1, use non-random default credentials of: guest:(blank) and admin:(blank) . A remote network attacker can gain privileged access to a vulnerable device.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.08% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-255
- Affected
- synology/ds107 firmware · synology/ds213 firmware · synology/ds116 firmware
- Source
- cret@cert.org
EPSS 4.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.kb.cert.org/vuls/id/404187Third Party Advisory, US Government Resource
- https://www.securityfocus.com/bid/93805Third Party Advisory, VDB Entry
- https://www.synology.com/en-global/releaseNote/DS213Release Notes, Vendor Advisory
- https://www.kb.cert.org/vuls/id/404187Third Party Advisory, US Government Resource
- https://www.securityfocus.com/bid/93805Third Party Advisory, VDB Entry
- https://www.synology.com/en-global/releaseNote/DS213Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.