CVE-2025-66208 is a critical OS Command Injection vulnerability (CWE-78) affecting Collabora Online - Built-in CODE Server (richdocumentscode) versions prior to 25.04.702. Specifically, users of Nextcloud with the Collabora Online - Built-in CODE Server app are vulnerable via proxy.php and an intermediate reverse proxy. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating a severe risk with a network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. The FAUCET Risk Score is 92/100. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 25.04.702CPE matchmatch criteria | cpe:2.3:a:collabora:online:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.