Main Vulnerability Database Vulnerabilities #VU119222

#VU119222 Improper Encoding or Escaping of Output in Deck - CVE-2025-66548

Published: December 5, 2025

Vulnerability identifier: #VU119222

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-66548

CWE-ID: CWE-116

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
Deck

Software vendor:
Nextcloud

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to improper encoding or escaping of output. A local user can spoof file extensions by using RTLO characters.

Install updates from vendor's website.