Skip to contentMicrosoft 365 vulnerabilities
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550587.8 High
- microsoft word, 365 apps, 365 apps for enterprise +14 more +16 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-550387.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550377.8 High
- microsoft word, 365 apps, 365 apps for enterprise +14 more +16 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-550557.8 High
- microsoft excel, office, 365 apps +12 more +14 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-550546.5 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550447.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550367.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-551297.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550355.5 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-551417.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-551367.8 High
- microsoft word, 365 apps, 365 apps for enterprise +15 more +17 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-551277.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-551385.5 Medium
- microsoft word, 365 apps, 365 apps for enterprise +15 more +17 moreMicrosoft Word Information Disclosure VulnerabilityCVE-2026-551245.5 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550417.8 High
- microsoft word, 365 apps, 365 apps for enterprise +14 more +16 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-550337.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +8 more +10 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-550497.8 High
- microsoft word, 365 apps, 365 apps for enterprise +14 more +16 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-550327.8 High
- microsoft word, 365 apps, 365 apps for enterprise +15 more +17 moreMicrosoft Word Information Disclosure VulnerabilityCVE-2026-550505.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-550458.4 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550397.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +14 more +16 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550475.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550285.5 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550297.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550275.5 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550487.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550266.2 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-551257.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550317.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550257.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +13 more +15 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-550235.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-550227.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-550465.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-550187.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550247.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-504085.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2016 +5 more +7 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-550177.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-504677.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-503147.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +5 more +7 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-503018.4 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-485805.5 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2019 +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-476427.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +5 more +7 moreMicrosoft Office Remote Code Execution VulnerabilityCVE-2026-472907.8 High
- microsoft 365 copilot, office 365 for mac, office for android +30 more +32 moreWindows GDI Elevation of Privilege VulnerabilityCVE-2026-503877.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-586187.8 High
- microsoft 365 apps, 365 apps for enterprise, office 2016 +9 more +11 moreMicrosoft Office Information Disclosure VulnerabilityCVE-2026-561937.1 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-559487.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-558997.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-549886.1 Medium
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-506786.6 Medium
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