RCE in Ai-Ql Tuui
CVE-2025-66562
TUUI is a desktop MCP client designed as a tool unitary utility integration. Prior to 1.3.4, a critical Remote Code Execution (RCE) vulnerability exists in Tuui due to an unsafe Cross-Site Scripting (XSS) flaw in the Markdown rendering component. Tuui allows the execution of arbitrary JavaScript within ECharts code blocks. Combined with an exposed IPC interface that allows spawning processes, an attacker can execute arbitrary system commands on the victim's machine simply by having them view a malicious Markdown message. This vulnerability is fixed in 1.3.4.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.005 (37.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Ai-ql Tuui — versions < 1.3.4
- Aiql Tuui
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-66562?
- CVE-2025-66562 is a critical-severity vulnerability in Ai-Ql Tuui, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2025-12-05.
- How severe is CVE-2025-66562?
- Critical severity. CVSS v3 base score is 9.6 out of 10.