Vulnerability · Published Feb 24, 2026 · Assigned by synology
CVE-2026-3091
Medium 6.7
In plain English
A medium-severity uncontrolled search path in Synology Presto Client from Synology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.2%top 94.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Synology | Synology Presto Client | * – before 2.1.3-0672 |
Weakness: CWE-427 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- Synology-SA-26:02 Synology Presto Client vendor-advisory