Print - 【Vulnerability Alert】Microsoft Excel Contains a High-Risk Security Vulnerability (CVE-2026-62870). Please Confirm and Apply Patches as Soon as Possible - Ming Chi University of Technology Library and Information Services

【Vulnerability Alert】Microsoft Excel Contains a High-Risk Security Vulnerability (CVE-2026-62870). Please Confirm and Apply Patches as Soon as Possible

publish date : 2026-08-07 update date : 2026-08-07

Source: Ministry of education information & communication security contingency platform

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Publication Number	TACERT-ANA-2026080605083838	Publication Time	2026-08-06 17:28:39
Incident Type	ANA-Vulnerability Alert	Discovery Time	2026-08-06 17:28:39
Impact Level	Middle
[Subject] 【Vulnerability Alert】Microsoft Excel Contains a High-Risk Security Vulnerability (CVE-2026-62870). Please Confirm and Apply Patches as Soon as Possible
[Content] Forwarded from the National Institute of Cyber Security Cybersecurity Alert NISAC-200-202608-00000002 Researchers discovered that Microsoft Excel contains a Use After Free vulnerability (CVE-2026-62870). An unauthenticated remote attacker may exploit this vulnerability to execute arbitrary code. Please confirm and apply patches as soon as possible. Information Sharing Level: WHITE (the intelligence content is information that may be publicly disclosed)
[Affected Platform] Microsoft 365 Apps for Enterprise for 32-bit Systems Microsoft 365 Apps for Enterprise for 64-bit Systems Microsoft Excel 2016 (32-bit edition) versions prior to 16.0.5561.1001 (exclusive) Microsoft Excel 2016 (64-bit edition) versions prior to 16.0.5561.1001 (exclusive) Microsoft Office 2019 for 32-bit editions Microsoft Office 2019 for 64-bit editions Microsoft Office LTSC 2021 for 32-bit editions Microsoft Office LTSC 2021 for 64-bit editions Microsoft Office LTSC 2024 for 32-bit editions Microsoft Office LTSC 2024 for 64-bit editions
[Recommended Actions] The official vendor has released a remediation update for the vulnerability. Please refer to the official instructions for updating. The URL is as follows: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62870
[Reference] 1. https://nvd.nist.gov/vuln/detail/CVE-2026-62870 2. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62870

(This notification is for informational purposes only and does not constitute a cybersecurity incident).
If you have questions or suggestions regarding this notification, please feel free to contact us.
Ministry of education information & communication security contingency platform
Website: https://info.cert.tanet.edu.tw/
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E-Mail: service@cert.tanet.edu.tw

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