VendorsMicrosoftoffice_online_serverall versions
Vulnerabilities

Microsoft Office Online Server

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

237CVEs
CVE-2020-0647
A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications correctly, aka 'Microsoft Office Online Spoofing Vulnerability'.
Published 2020-01-14 · Modified
5.8EPSS 0.009
CVE-2019-1445
A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications handlers correctly, aka 'Microsoft Office Online Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-1447.
Published 2019-11-12 · Modified
5.8EPSS 0.008
CVE-2019-1447
A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications handlers correctly, aka 'Microsoft Office Online Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-1445.
Published 2019-11-12 · Modified
5.8EPSS 0.008
CVE-2021-31178
Microsoft Office Information Disclosure Vulnerability
Published 2021-05-11 · Modified
5.5EPSS 0.160
CVE-2019-1446
An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka 'Microsoft Excel Information Disclosure Vulnerability'.
Published 2019-11-12 · Modified
5.5EPSS 0.089
CVE-2020-1342
An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka 'Microsoft Office Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2020-1445.
Published 2020-07-14 · Modified
5.5EPSS 0.064
CVE-2020-1445
An information disclosure vulnerability exists when Microsoft Office improperly discloses the contents of its memory, aka 'Microsoft Office Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2020-1342.
Published 2020-07-14 · Modified
5.5EPSS 0.061
CVE-2020-1502
Microsoft Word Information Disclosure Vulnerability
Published 2020-08-17 · Modified
5.5EPSS 0.046
CVE-2022-22716
Microsoft Excel Information Disclosure Vulnerability
Published 2022-02-09 · Modified
5.5EPSS 0.046
CVE-2020-1503
Microsoft Word Information Disclosure Vulnerability
Published 2020-08-17 · Modified
5.5EPSS 0.046
CVE-2020-1224
Microsoft Excel Information Disclosure Vulnerability
Published 2020-09-11 · Modified
5.5EPSS 0.044
CVE-2021-28456
Microsoft Excel Information Disclosure Vulnerability
Published 2021-04-13 · Modified
5.5EPSS 0.037
CVE-2021-31174
Microsoft Excel Information Disclosure Vulnerability
Published 2021-05-11 · Modified
5.5EPSS 0.029
CVE-2022-30172
Microsoft Office Information Disclosure Vulnerability
Published 2022-06-15 · Modified
5.5EPSS 0.027
CVE-2022-30159
Microsoft Office Information Disclosure Vulnerability
Published 2022-06-15 · Modified
5.5EPSS 0.027
CVE-2022-30171
Microsoft Office Information Disclosure Vulnerability
Published 2022-06-15 · Modified
5.5EPSS 0.026
CVE-2020-17126
Microsoft Excel Information Disclosure Vulnerability
Published 2020-12-09 · Modified
5.5EPSS 0.011
CVE-2022-41103
Microsoft Word Information Disclosure Vulnerability
Published 2022-11-09 · Modified
5.5EPSS 0.009
CVE-2022-41060
Microsoft Word Information Disclosure Vulnerability
Published 2022-11-09 · Modified
5.5EPSS 0.008
CVE-2023-33162
Microsoft Excel Information Disclosure Vulnerability
Published 2023-07-11 · Modified
5.5EPSS 0.008
CVE-2021-40472
Microsoft Excel Information Disclosure Vulnerability
Published 2021-10-13 · Modified
5.5EPSS 0.007
CVE-2026-21258
Microsoft Excel Information Disclosure Vulnerability
Published 2026-02-10 · Analyzed
5.5EPSS 0.006
CVE-2026-21261
Microsoft Excel Information Disclosure Vulnerability
Published 2026-02-10 · Analyzed
5.5EPSS 0.006
CVE-2026-55050
Microsoft Word Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.006
CVE-2026-55047
Microsoft Office Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.006
CVE-2026-55124
Microsoft Word Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.006
CVE-2026-55046
Microsoft Excel Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.005
CVE-2026-81390
Microsoft Excel Information Disclosure Vulnerability
Published 2026-09-08 · Analyzed
5.5EPSS 0.005
CVE-2026-50408
Microsoft Excel Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.005
CVE-2026-48580
Microsoft Excel Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.005
CVE-2026-55138
Microsoft Excel Information Disclosure Vulnerability
Published 2026-07-14 · Analyzed
5.5EPSS 0.005
CVE-2026-81401
Microsoft Excel Information Disclosure Vulnerability
Published 2026-09-08 · Analyzed
5.5EPSS 0.005
CVE-2025-48812
Microsoft Excel Information Disclosure Vulnerability
Published 2025-07-08 · Analyzed
5.5EPSS 0.005
CVE-2017-0195
Microsoft Excel Services on Microsoft SharePoint Server 2010 SP1 and SP2, Microsoft Excel Web Apps 2010 SP2, Microsoft Office Web Apps 2010 SP2, Microsoft Office Web Apps Server 2013 SP1 and Office Online Server allows remote attackers to perform cross-site scripting and run script with local user privileges via a crafted request, aka "Microsoft Office XSS Elevation of Privilege Vulnerability."
Published 2017-04-12 · Modified
5.4EPSS 0.038
CVE-2021-34451
Microsoft Office Online Server Spoofing Vulnerability
Published 2021-07-16 · Modified
5.3EPSS 0.018
CVE-2018-0919
Microsoft Office 2010 SP2, 2013 SP1, and 2016, Microsoft Office 2016 Click-to-Run Microsoft Office 2016 for Mac, Microsoft Office Web Apps 2010 SP2, Microsoft Office Web Apps 2013 SP1, Microsoft SharePoint Enterprise Server 2013 SP1, Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2010 SP2, Microsoft Word 2010 SP2, Word 2013 SP1 and Microsoft Word 2016 allow an information disclosure vulnerability due to how variables are initialized, aka "Microsoft Office Information Disclosure Vulnerability".
Published 2018-03-14 · Modified
4.3EPSS 0.117
CVE-2026-45455
Microsoft Excel Information Disclosure Vulnerability
Published 2026-06-09 · Modified
4.3EPSS 0.008
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