Description
Maxthon3 version 3.2.2 build 1000 and prior are vulnerable to cross context scripting (XCS) via the about:history page. The browser’s trusted zone improperly handles injected script content, allowing attackers to execute arbitrary JavaScript in a privileged context. This flaw enables modification of browser configuration and execution of arbitrary code through Maxthon’s exposed DOM APIs, including maxthon.program.Program.launch() and maxthon.io.writeDataURL(). Exploitation requires user interaction, typically by visiting a malicious webpage that triggers the injection.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:XWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Maxthon International Ltd. | Maxthon3 Browser | >= 3.1.7 build 600, <= 3.2.2 build 1000 |
References
- http://blog.malerisch.net/2012/12/maxthon-cross-context-scripting-xcs-about-history-rce.html
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/maxthon_history_xcs.rb
- https://www.exploit-db.com/exploits/23225
- https://www.fortiguard.com/encyclopedia/ips/34203
- https://www.maxthon.com/
- https://www.vulncheck.com/advisories/maxthon3-xcs-trusted-zone-code-exec
- https://www.exploit-db.com/exploits/23225
Timeline
- Published
- Aug 5, 2025
- Last modified
- Jun 16, 2026
- NVD status
- Deferred