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The vulnerability of Microsoft Excel spreadsheet editors in Microsoft Office products and Microsoft 365 Apps for Enterprise allows a perpetrator to disclose protected information.
🗓️ 16 Feb 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 2 Views
| Reporter | Title | Published | Views | Family All 20 |
|---|---|---|---|---|
 | CVE-2026-21261 | 10 Feb 202617:51 | – | attackerkb |
 | CVE-2026-21261 | 10 Feb 202617:30 | – | circl |
 | Microsoft Excel 缓冲区错误漏洞 | 10 Feb 202600:00 | – | cnnvd |
 | Microsoft Excel Buffer Overflow Vulnerability (CNVD-2026-12553) | 2 Mar 202600:00 | – | cnvd |
 | CVE-2026-21261 | 10 Feb 202617:51 | – | cve |
 | CVE-2026-21261 Microsoft Excel Information Disclosure Vulnerability | 10 Feb 202617:51 | – | cvelist |
 | Description of the security update for Office Online Server: February 10, 2026 (KB5002835) | 10 Feb 202616:00 | – | mskb |
| Description of the security update for Excel 2016: February 10, 2026 (KB5002837) | 10 Feb 202616:00 | – | mskb |
 | KLA90874 Multiple vulnerabilities in Microsoft Office | 10 Feb 202600:00 | – | kaspersky |
 | Microsoft Excel Information Disclosure Vulnerability | 10 Feb 202616:00 | – | mscve |
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16 Feb 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 24.9
CVSS 35.5
EPSS0.00596