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CVE-2026-62918

highCVSS 7.5covered by 1 sourcefirst seen 2026-08-06
Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.

CSIRTS triage

vendor: Microsoftproduct: Microsoft TeamsOther
What
Improper verification of cryptographic signatures allows unauthorized attackers to perform spoofing over the network.
Who is affected
All Microsoft Teams deployments are affected.
Urgency
High severity (CVSS 7.5); not yet exploited but requires timely patching.
Action
Apply the latest security update from Microsoft for Teams.

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Advisory coverage (1)

External references

NVD record for CVE-2026-62918

CVE.org record

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