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CVE-2016-6554
Synology NAS servers DS107, DS116, and DS213, use default credentials
Critical9.8EPSS 4.1%
- Published
- Updated
- Reserved
- Assigned by
- certcc
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.1% · top 9.3% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
Synology · NAS server DS107
- affected 3.1-1639 – ≤ 3.1-1639
Synology · NAS server DS116
- affected 5.2-5644-1 – < 5.2-5644-1
Synology · NAS server DS213
- affected 5.2-5644-1 – < 5.2-5644-1
References (3)
- https://www.synology.com/en-global/releaseNote/DS213 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 93805 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#404187 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .