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CVE-2026-39975— Combodo iTop: Remote code execution using external auth variable value

Quick assessment

Affected
Combodo iTop
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.

Combodo iTop 是一款基于 Web 的 IT 服务管理工具。在 3.2.3 版本之前，未认证用户可以删除 iTop 实例中的 .readonly 文件，从而导致代码执行。该文件在系统安装过程中创建，用于防止用户执行写入操作。此问题已在 3.2.3 版本中得到修复。

CVSS 9.4 · Critical EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Combodo iTop < 3.2.3 affected
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I. Basic Information for CVE-2026-39975

Vulnerability Information
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Vulnerability Title
Combodo iTop: Remote code execution using external auth variable value
Source: CVE Program / CVE List V5
Vulnerability Description
Combodo iTop is a web-based IT service management tool. Prior to 3.2.3, unauthenticated users could delete the .readonly file on iTop instances, leading to code execution. This file, created during the setup process, prevents users from performing write actions. This issue has been fixed in version 3.2.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Combodo iTop < 3.2.3 -

II. Public POCs for CVE-2026-39975

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III. Intelligence Information for CVE-2026-39975

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Vendor Advisories for CVE-2026-39975 (1)

Same Patch Batch · Combodo · 2026-08-24 · 3 CVEs total

CVE-2026-30864 8.9 HIGH Combodo iTop: Reflected XSS in dashboard revert
CVE-2026-40877 8.7 HIGH Combodo iTop: PHP Object Injection Leading to Remote Code Execution on user preferences

IV. Related Vulnerabilities

Same product: iTop
Same vendor: Combodo
Same weakness: CWE-94

V. Comments for CVE-2026-39975

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