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Microsoft Teams ↗

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Monitors Microsoft Teams and tailors your dashboard to that exact version.
all versions20/100 Critical · exploited

Teams desktop client (auto-updating); product-level posture, not a per-version verdict.

Summary iPlain-English security verdict for Microsoft Teams, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.

Microsoft Teams currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2023-4863. Upgrade immediately and review your exposure to the actively-exploited CVEs below.

Disclosure trend iNew CVEs published for Microsoft Teams each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.

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Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.

Most urgent first — actively exploited, then likeliest to be exploited.

CVE-2023-4863 HIGH exploited Out-of-bounds write EPSS 100% → fixed in 1.6.00.26474 CVE-2026-33823 CRITICAL CWE-285 EPSS 1% → see advisory

See all 23 known Microsoft Teams CVEs & security history →

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Frequently asked

Is Microsoft Teams safe and patched?

Microsoft Teams currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2023-4863. Upgrade immediately and review your exposure to the actively-exploited CVEs below.

What should I do about Microsoft Teams now?

Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Microsoft's official advisory. Some issues are under active exploitation, so treat this as urgent.

lifecycle unknown — needs latest supported version

Latest security news for Microsoft Teams BETA

Attributed third-party reporting linked to Microsoft Teams — newest first. We surface and link the source; we don’t assert our own findings. About Emerging →

Reported Hackers Weaponize Microsoft Teams Relay to Hide Ransomware TrafficCyber Security News · 16 Jun 2026 · medium confidence Reported Microsoft Teams Analyze the Wi-Fi Hotspot Data Connected to an Employee’s DeviceCyber Security News · 16 Jun 2026 · medium confidence Reported Ransomware gang abuses Microsoft Teams relays to hide malicious trafficBleepingComputer · 16 Jun 2026 · medium confidence

More across all tracked software on the Emerging feed →

Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Microsoft's official advisory before you patch or upgrade — Microsoft Teams official site ↗