Microsoft Teams Spoofing Vulnerability

Date Aug 6, 2026

Type Patch Tuesday

Signal High-risk advisory

Vendor / Product Microsoft · Microsoft Teams

CVE CVE-2026-62918

High-risk advisory CVE-2026-62918

Summary

Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network. Published in August 2026 Early Security Updates. MSRC exploitability: Publicly Disclosed:No;Exploited:No;Latest Software Release:N/A.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates. EPSS percentile: 22%.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-62918. Confirm whether Microsoft Teams is deployed, then apply the current security update or documented mitigation. CVSS score: 7.5. EPSS probability: 0.3%; percentile: 22%.

Sources

MSRC 2026-Aug Security Update Guide NVD — CVE-2026-62918

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