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CVE-2025-40899— Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0

Quick assessment

Affected
Nozomi Networks Guardian
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.

Nozomi Networks CMC和Nozomi Networks Guardian都是美国Nozomi Networks公司的产品。Nozomi Networks CMC是一款网络管理平台。Nozomi Networks Guardian是一款防护软件。 Nozomi Networks CMC和Nozomi Networks Guardian存在安全漏洞，该漏洞源于对输入参数验证不当，可能导致经过身份验证的用户定义恶意自定义字段，造成存储型跨站脚本攻击。

CVSS 8.9 · High EPSS 0.29% · P19

Affected Version Matrix 2

VendorProduct Version RangeStatus
Nozomi Networks CMC < 26.0.0 affected
Nozomi Networks Guardian < 26.0.0 affected
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I. Basic Information for CVE-2025-40899

Vulnerability Information
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Vulnerability Title
Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0
Source: CVE Program / CVE List V5
Vulnerability Description
A Stored Cross-Site Scripting vulnerability was discovered in the Assets and Nodes functionality due to improper validation of an input parameter. An authenticated user with custom fields privileges can define a malicious custom field containing a JavaScript payload. When the victim views the Assets or Nodes pages, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Nozomi Networks CMC和Nozomi Networks Guardian 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nozomi Networks CMC和Nozomi Networks Guardian都是美国Nozomi Networks公司的产品。Nozomi Networks CMC是一款网络管理平台。Nozomi Networks Guardian是一款防护软件。 Nozomi Networks CMC和Nozomi Networks Guardian存在安全漏洞，该漏洞源于对输入参数验证不当，可能导致经过身份验证的用户定义恶意自定义字段，造成存储型跨站脚本攻击。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nozomi Networks Guardian 0 ~ 26.0.0 -
Nozomi Networks CMC 0 ~ 26.0.0 -

II. Public POCs for CVE-2025-40899

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III. Intelligence Information for CVE-2025-40899

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IV. Related Vulnerabilities

Same product: Guardian
Same vendor: Nozomi Networks
Same weakness: CWE-79

V. Comments for CVE-2025-40899

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