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CVE-2025-54982— SAML 2.0 Public Key Validation Issue

Quick assessment

Affected
Zscaler Authentication Server
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.

Zscaler Client Connector是Zscaler公司的一个轻量级代理。 Zscaler Client Connector存在安全漏洞，该漏洞源于SAML身份验证机制中加密签名验证不当，可能导致身份验证滥用。

CVSS 9.6 · Critical EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-54982

Vulnerability Information
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Vulnerability Title
SAML 2.0 Public Key Validation Issue
Source: CVE Program / CVE List V5
Vulnerability Description
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zscaler Client Connector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zscaler Client Connector是Zscaler公司的一个轻量级代理。 Zscaler Client Connector存在安全漏洞，该漏洞源于SAML身份验证机制中加密签名验证不当，可能导致身份验证滥用。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Zscaler Authentication Server 0 ~ 6.2r -

II. Public POCs for CVE-2025-54982

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III. Intelligence Information for CVE-2025-54982

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IV. Related Vulnerabilities

Same vendor: Zscaler
Same weakness: CWE-347

V. Comments for CVE-2025-54982

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