CVE-2026-3091 MEDIUM

CVE-2026-3091

Vendor Synology
Product Synology Presto Client
Weakness CWE-427
Published February 24, 2026
Last update June 2, 2026

CVSS base score

6.7/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

An uncontrolled search path element vulnerability in Synology Presto Client before 2.1.3-0672 allows local users to read or write arbitrary files and conduct denial-of-service during installation by placing a malicious DLL in advance in the same directory as the installer.

Key dates

02Disclosure timeline

February 24, 2026 CVE published
June 2, 2026 Record updated