Microsoft Office ↗
Desktop Office (Word, Excel, Outlook, PowerPoint). Microsoft 365 apps auto-update; perpetual Office (2016/2019/2021) is assessed at product level on recent advisories, not a per-version verdict.
Summary iPlain-English security verdict for Microsoft Office, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Microsoft Office currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2026-21509. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for Microsoft Office each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
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-2026-21509 HIGH exploited CWE-807 EPSS 72% → see advisorySee all 9 known Microsoft Office CVEs & security history →
How to patch Microsoft Office — step-by-step to the latest secure version →
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Frequently asked
Is Microsoft Office safe and patched?
Microsoft Office currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2026-21509. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about Microsoft Office 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 Office BETA
Attributed third-party reporting linked to Microsoft Office — newest first. We surface and link the source; we don’t assert our own findings. About Emerging →
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 Office official site ↗