CVE-2025-54982— SAML 2.0 Public Key Validation Issue
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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: NVD (National Vulnerability Database)
Vulnerability Description
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
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)
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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
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: Zscaler
Same weakness: CWE-347
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Plunk: SNS webhook forgery - CVE-2026-44497
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type - CVE-2026-41669
Admidio: SAML Signature Validation Result Ignored — Forged A - CVE-2026-7689
Dolibarr ERP CRM Online Signature security.lib.php dol_verif - CVE-2026-33467
Improper Verification of Cryptographic Signature in Elastic
V. Comments for CVE-2025-54982
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