CVE-2026-62918: Microsoft Teams Spoofing Vulnerability
Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.
CSIRTS triage
- 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.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62918
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-62918 | coverage & exploitation status | NVD · CVE.org |
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