Description of the security update for Excel 2016: May 12, 2026 (KB5002865)

🗓️ 12 May 2026 14:00:00Reported by MicrosoftType

mskb

mskb🔗 support.microsoft.com👁 14 Views

Excel 2016 security update May 12 2026 fixes remote code execution and information disclosure.

Reporter	Title	Published	Views	Family All 43
ATTACKERKB	CVE-2026-40360	12 May 202616:58	–	attackerkb
ATTACKERKB	CVE-2026-40362	12 May 202616:59	–	attackerkb
ATTACKERKB	CVE-2026-40359	12 May 202616:59	–	attackerkb
BDU FSTEC	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 202600:00	–	bdu_fstec
BDU FSTEC	The vulnerability of Microsoft Office, Excel, and 365 Apps for Enterprise packages lies in their ability to exploit memory after it is freed, allowing an attacker to execute arbitrary code.	14 May 202600:00	–	bdu_fstec
BDU FSTEC	The vulnerability of Microsoft Excel spreadsheet editors in Microsoft Office packages and Microsoft 365 Apps for Enterprise allows a perpetrator to execute arbitrary code.	22 May 202600:00	–	bdu_fstec
Circl	CVE-2026-40359	12 May 202615:53	–	circl
Circl	CVE-2026-40360	12 May 202615:53	–	circl
Circl	CVE-2026-40362	12 May 202615:53	–	circl
CNNVD	Microsoft Excel 缓冲区错误漏洞	12 May 202600:00	–	cnnvd

12 May 2026 14:00Current

7High risk

Vulners AI Score7

CVSS 3.17.8

EPSS0.00408

SSVC

Excel 2016 Security update Remote code execution Information disclosure May 12 2026