Skip to contentMicrosoft Office Online Server vulnerabilities
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-558986.1 Medium
- microsoft 365 apps, 365 apps for enterprise, office 2019 +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-541317.8 High
- microsoft word, 365 apps, 365 apps for enterprise +15 more +17 moreMicrosoft Word Remote Code Execution VulnerabilityCVE-2026-551287.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-551317.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-551227.1 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550537.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-551377.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550587.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550377.8 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 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 +15 more +17 moreMicrosoft Word Information Disclosure VulnerabilityCVE-2026-550505.5 Medium
- 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 excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550297.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-550487.8 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 excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-550465.5 Medium
- 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 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 excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-586187.8 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
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-506757.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-454553.3 Low
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-448228.2 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-448237.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-448207.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-448187.0 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-448177.8 High
- microsoft excel, 365 apps, 365 apps for enterprise +11 more +13 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-454697.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-403627.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-403597.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Information Disclosure VulnerabilityCVE-2026-403607.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-321997.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-321987.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-321977.8 High
- microsoft excel, office, 365 apps +9 more +11 moreMicrosoft Excel Remote Code Execution VulnerabilityCVE-2026-321897.8 High
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