Excel
Summary iPlain-English security verdict for Excel, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Excel currently scores 20/100 — critical, with active exploitation. 6 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2009-3129. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for Excel 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-2009-3129 HIGH exploited Out-of-bounds write EPSS 86% → see advisory CVE-2016-7262 HIGH exploited EPSS 58% → see advisory CVE-2009-0238 HIGH exploited Code injection EPSS 43% → see advisory CVE-2007-0671 HIGH exploited EPSS 42% → see advisory CVE-2021-42292 HIGH exploited EPSS 32% → see advisory CVE-2019-1297 HIGH exploited EPSS 20% → see advisory CVE-2011-0105 HIGH Memory corruption EPSS 71% → see advisory CVE-2010-0822 HIGH Code injection EPSS 70% → see advisory CVE-2010-0258 HIGH CWE-843 EPSS 61% → see advisory CVE-2008-0081 CRITICAL CWE-908 EPSS 58% → see advisory CVE-2023-36041 HIGH Use-after-free EPSS 57% → see advisory CVE-2002-1143 MEDIUM EPSS 54% → see advisoryGet alerted about Excel
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Frequently asked
Is Excel safe and patched?
Excel currently scores 20/100 — critical, with active exploitation. 6 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2009-3129. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about Excel 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.
Why is Excel listed on IsItPatched?
Excel was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
lifecycle unknown — needs latest supported version
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.