CVE-2018-12303
CWE-79Published: May 13, 2019· Updated: Jun 17, 2026
Official Description
Cross-site scripting in filebrowser in Seagate NAS OS version 4.3.15.1 allows attackers to execute JavaScript via directory names.
Technical Analysis
CVE-2018-12303 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-12303 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts