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

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HIGH

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 Jul 5, 2018

8.8

HIGH

CVSS 3.0

EPSS 1.35%

Description

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.

Affected products

Vendor Synology Product Universal Search Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <1.0.5-0135

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Synology

Universal Search

n/a

Version	Status	Constraints
unspecified	affected	<1.0.5-0135

Remediation

No remediation recorded yet.

Metrics

1.35% 0.01350

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01350

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.35% (0.01350)	70.49th	v5 (v2026.06.15)
Sep 20, 2026	1.35% (0.01350)	70.25th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00068)	30.11th	v3 (v2023.03.01)
Jun 12, 2024	0.07% (0.00068)	29.57th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00068)	27.55th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.52% (0.00523)	12.55th	v5 (v2026.06.15)
Apr 14, 2021	0.52% (0.00523)	0.00th	v1