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CVE-2026-20184— Cisco Webex Meetings Certificate Validation Vulnerability

CVSS 9.8 · Critical EPSS 0.07% · P21
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I. Basic Information for CVE-2026-20184

Vulnerability Information
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Vulnerability Title
Cisco Webex Meetings Certificate Validation Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. A successful exploit could have allowed the attacker to gain unauthorized access to legitimate Cisco Webex services.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Webex Services 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Webex Services是美国思科（Cisco）公司的一系列在线协作服务。 Cisco Webex Services存在安全漏洞，该漏洞源于证书验证不当，可能导致未经验证的远程攻击者冒充服务内的任何用户。
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

VendorProductAffected VersionsCPESubscribe
CiscoCisco Webex Meetings 39.7.7 -

II. Public POCs for CVE-2026-20184

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III. Intelligence Information for CVE-2026-20184

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Same Patch Batch · Cisco · 2026-04-15 · 15 CVEs total

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CVE-2026-201869.9 CRITICALCisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability
CVE-2026-201479.9 CRITICALCisco Identity Services Engine Remote Code Execution Vulnerability
CVE-2026-200816.5 MEDIUMCisco Unity Connection Arbitrary File Download Vulnerability
CVE-2026-200786.5 MEDIUMCisco Unity Connection Arbitrary File Download Vulnerability
CVE-2026-200596.1 MEDIUMCisco Unity Connection Reflected Cross-Site Scripting Vulnerability
CVE-2026-201706.1 MEDIUMCisco Webex Contact Center 安全漏洞
CVE-2026-201366.0 MEDIUMCisco Identity Services Engine Authenticated Privilege Escalation Vulnerability
CVE-2026-201615.5 MEDIUMCisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability
CVE-2026-201525.3 MEDIUMCisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
CVE-2026-201484.9 MEDIUMCisco Identity Services Engine Path Traversal Vulnerability
CVE-2026-201324.8 MEDIUMCisco Identity Services Engine Multiple Cross-Site Scripting Vulnerabilities
CVE-2026-200604.7 MEDIUMCisco Unity Connection Open Redirect Vulnerability
CVE-2026-200614.3 MEDIUMCisco Unity Connection SQL Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Webex Meetings
Same vendor: Cisco
Same weakness: CWE-295

V. Comments for CVE-2026-20184

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