What is CVE-2017-16773?

CVE-2017-16773 is a medium-severity vulnerability in Synology Universal Search, classified under Improper Authorization. CVSS score: 6.5/10. Published 2018-07-05.

How severe is CVE-2017-16773?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Synology Universal Search

CVE-2017-16773

Improper authorization vulnerability in Highlight Preview in Synology Universal Search before 1.0.5-0135 allows remote authenticated users to bypass permission checks for directories in POSIX mode.

Published 2018-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Synology Universal Search — versions unspecified
Synology Universal Search

Weakness classification (CWE)

References

www.synology.com/en-global/support/security/Synology_SA_18_27 (Vendor Advisory)

Frequently asked questions

What is CVE-2017-16773?: CVE-2017-16773 is a medium-severity vulnerability in Synology Universal Search, classified under Improper Authorization. CVSS score: 6.5/10. Published 2018-07-05.
How severe is CVE-2017-16773?: Medium severity. CVSS v3 base score is 6.5 out of 10.