Back to Database
Status published
Critical
CVE-2017-15887
An improper restriction of excessive authentication attempts vulnerability in /principals...
Vulnerability Description
An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2017-15887
Credits & Attribution
No credits recorded in the NVD database.
More from Synology
View All →CVE-2025-8074
Origin validation error vulnerability in BeeDrive in Synology BeeDrive for...
Medium
5.6
CVE-2025-66593
An origin validation error vulnerability in Synology Assistant before 7.0.6-50085...
Medium
6.1
CVE-2025-66592
An origin validation error vulnerability in Synology Active Backup for...
Medium
6.1
CVE-2025-54160
Improper limitation of a pathname to a restricted directory ('Path...
High
7.8
CVE-2025-54159
Missing authorization vulnerability in BeeDrive in Synology BeeDrive for desktop...
High
7.5
Affected Vendor
Synology
View all reports →Affected Software
Synology CardDAV Server
Vulnerable Versions:
before 6.0.7-0085
Timeline
Official Publish:
November 7th, 2017
Last Modified:
September 16th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H