CVE-2026-3091

low-risk
Published 2026-02-24

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

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.7/10 Medium
LOCAL / HIGH complexity

Affected Products (1)

Presto Client

Affected Vendors

Synology

References (1)

Vendor Advisory https://www.synology.com/en-global/security/advisory/Synology_SA_26_02
22
/ 100
low-risk
Severity 17/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal