CVE-2025-66744

In Yonyou YonBIP v3 and before, the LoginWithV8 interface in the series data application service system is vulnerable to path traversal, allowing unauthorized…

High · published January 9, 2026

CVSS v3.1
7.5
EPSS
2%
Percentile
74.8
In the wild
Unconfirmed
What it is

⚡ A sneaky path traversal vulnerability in Yonyou YonBIP could let unauthorized users peek into sensitive files like a delivery driver who reads through customer packages instead of just delivering them! 📦 Picture a hotel with a hidden door that leads directly to the VIP lounge. If someone knows where to look, they can bypass the check-in desk and stroll right in, accessing all the confidential information stored there. This vulnerability allows attackers to gain unauthorized access to sensitive information within the system, potentially exposing critical data. If exploited, it could lead to data leaks that may severely impact your organization's reputation and security. Protect your client trust or risk having them question your safety measures!

Put simply

Picture a hotel with a hidden door that leads directly to the VIP lounge. If someone knows where to look, they can bypass the check-in desk and stroll right in, accessing all the confidential information stored there. In Yonyou YonBIP v3 and earlier, the LoginWithV8 interface is susceptible to path traversal attacks, which enable unauthorized users to access files and directories outside the intended application path.

What to do

This vulnerability allows attackers to gain unauthorized access to sensitive information within the system, potentially exposing critical data. If exploited, it could lead to data leaks that may severely impact your organization's reputation and security. Protect your client trust or risk having them question your safety measures! To mitigate this risk, apply the latest patch provided by Yonyou to the YonBIP system. Ensure that input validation and sanitization are implemented appropriately to prevent path traversal attempts. Regularly audit your configurations to keep your system secure. You've got this! Follow these steps and watch your security hero status rise! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01544 · 74.8th percentile
Published
2026-01-09T00:00Z
EPSS history
Timeline
  • 09 JAN 00:00Z
    In Yonyou YonBIP v3 and before, the LoginWithV8 interface in the series data application service system is vulnerable to path traversal, allowing unauthorized…
    cvelistv5