Uncontrolled Search Path Element Vulnerability in Synology Presto Client
CVE-2026-3091

6.7MEDIUM

Key Information:

Vendor

Synology
Status
Synology Presto Client
Vendor
CVE Published:
24 February 2026

What is CVE-2026-3091?

An uncontrolled search path element vulnerability exists in the Synology Presto Client prior to version 2.1.3-0672. This issue permits local users to exploit a flaw during the software installation process, allowing them to read or write arbitrary files. Attackers can leverage this security gap by placing a malicious DLL file in the same directory as the installation program, potentially compromising system integrity.

Affected Version(s)

Synology Presto Client *

References

https://www.synology.com/en-global/security/advisory/Syno...
vendor-advisory

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sahil Shah
.