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CVE-2026-62918— Microsoft Teams Spoofing Vulnerability

Quick assessment

Affected
Microsoft Microsoft Teams
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.

Microsoft Teams是美国Microsoft公司的一款团队协作通讯平台。 Microsoft Teams存在加密问题漏洞，该漏洞源于加密签名验证不当，可能导致未经授权的攻击者在网络上进行欺骗。

CVSS 7.5 · High EPSS 0.50% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Teams - affected
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I. Basic Information for CVE-2026-62918

Vulnerability Information
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Vulnerability Title
Microsoft Teams Spoofing Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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
Microsoft Teams 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Teams是美国Microsoft公司的一款团队协作通讯平台。 Microsoft Teams存在加密问题漏洞，该漏洞源于加密签名验证不当，可能导致未经授权的攻击者在网络上进行欺骗。
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
Microsoft Microsoft Teams - -

II. Public POCs for CVE-2026-62918

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III. Intelligence Information for CVE-2026-62918

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Vendor Advisories for CVE-2026-62918 (1)

Same Patch Batch · Microsoft · 2026-08-06 · 17 CVEs total

CVE-2026-63508 10.0 CRITICAL Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability
CVE-2026-65667 10.0 CRITICAL Microsoft Teams Elevation of Privilege Vulnerability
CVE-2026-56162 10.0 CRITICAL Azure SQL Database Elevation of Privilege Vulnerability
CVE-2026-50515 9.9 CRITICAL Azure Service Bus Remote Code Execution Vulnerability
CVE-2026-62830 9.9 CRITICAL Azure SRE Agent Elevation of Privilege Vulnerability
CVE-2026-59115 9.9 CRITICAL Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability
CVE-2026-50481 9.9 CRITICAL Azure Active Directory Elevation of Privilege Vulnerability
CVE-2026-62873 9.8 CRITICAL Microsoft 365 Admin Center Elevation of Privilege Vulnerability
CVE-2026-70332 9.6 CRITICAL Microsoft Office SharePoint Spoofing Vulnerability
CVE-2026-56161 9.6 CRITICAL Azure Logic Apps Information Disclosure Vulnerability
CVE-2026-62896 9.6 CRITICAL Microsoft Teams Elevation of Privilege Vulnerability
CVE-2026-59118 9.3 CRITICAL Copilot Cowork Elevation of Privilege Vulnerability
CVE-2026-68823 9.1 CRITICAL Azure Confidential Ledger Remote Code Execution Vulnerability
CVE-2026-49163 8.8 HIGH Application Insights Profiler Elevation of Privilege Vulnerability
CVE-2026-65668 8.8 HIGH Microsoft Purview eDiscovery Elevation of Privilege Vulnerability
CVE-2026-62836 8.7 HIGH Azure SQL Managed Instance Elevation of Privilege Vulnerability

IV. Related Vulnerabilities

Same product: Microsoft Teams
Same vendor: Microsoft
Same weakness: CWE-347

V. Comments for CVE-2026-62918

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