CVE-2026-3091

Name: CVE-2026-3091
Creator: NVD / NIST
Published: 2026-02-24T03:16:03.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 0.14%

Last modified Jun 17, 2026

CVE-2026-3091 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.3/10

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

EPSS Probability

0.14%

4.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-427

Affected Software

Vendor	Product	Versions
Synology	Presto Client	< 2.1.3-0672

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_02Vendor Advisory

Timeline

Published: Feb 24, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-3091?

How severe is CVE-2026-3091?

CVE-2026-3091 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3091?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3091?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST