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CVE-2025-8861— Changing｜TSA - Missing Authentication

Quick assessment

Affected
Changing TSA
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Changing TSA是中国台湾全景（Changing）公司的一个时间戳服务器。 Changing TSA存在访问控制错误漏洞，该漏洞源于缺少身份验证，可能导致未经验证的远程攻击者读取、修改和删除数据库内容。

CVSS 9.8 · Critical EPSS 0.52% · P43

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-8861

Vulnerability Information
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Vulnerability Title
Changing｜TSA - Missing Authentication
Source: CVE Program / CVE List V5
Vulnerability Description
TSA developed by Changing has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to read, modify, and delete database contents.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Changing TSA 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Changing TSA是中国台湾全景（Changing）公司的一个时间戳服务器。 Changing TSA存在访问控制错误漏洞，该漏洞源于缺少身份验证，可能导致未经验证的远程攻击者读取、修改和删除数据库内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Changing TSA 0 ~ 2025/2/6 -

II. Public POCs for CVE-2025-8861

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III. Intelligence Information for CVE-2025-8861

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Same Patch Batch · Changing · 2025-08-29 · 3 CVEs total

CVE-2025-8857 9.8 CRITICAL Changing｜Clinic Image System - Use of Hard-coded Credentials
CVE-2025-8858 7.5 HIGH Changing｜Clinic Image System - SQL Injection

IV. Related Vulnerabilities

Same vendor: Changing
Same weakness: CWE-306

V. Comments for CVE-2025-8861

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