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The vulnerability of Microsoft Excel, Microsoft Office, and Microsoft 365 Apps for Enterprise applications relates to reading beyond the buffer limit in memory, allowing an intruder to gain unauthorized access to protected information.
🗓️ 13 May 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 19 |
|---|---|---|---|---|
 | CVE-2026-40360 | 12 May 202616:58 | – | attackerkb |
 | CVE-2026-40360 | 12 May 202615:53 | – | circl |
 | Microsoft Excel 缓冲区错误漏洞 | 12 May 202600:00 | – | cnnvd |
 | CVE-2026-40360 | 12 May 202616:58 | – | cve |
 | CVE-2026-40360 Microsoft Excel Information Disclosure Vulnerability | 12 May 202616:58 | – | cvelist |
 | EUVD-2026-29642 | 12 May 202618:30 | – | euvd |
 | Description of the security update for Excel 2016: May 12, 2026 (KB5002865) | 12 May 202614:00 | – | mskb |
| Description of the security update for Office Online Server: May 12, 2026 (KB5002871) | 12 May 202614:00 | – | mskb |
 | KLA91035 Multiple vulnerabilities in Microsoft Office | 12 May 202600:00 | – | kaspersky |
 | Security Updates for Microsoft Office Products (May 2026) (macOS) | 12 May 202600:00 | – | nessus |
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13 May 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 27.2
CVSS 37.8
EPSS0.00408