Recorded 20 Oct 2026 at 20:53 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position.
See the latest record.
The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.
The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.
CVEMicrosoft Security Response Center
Microsoft Excel Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition), Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition), Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft Office 365 for Mac, 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, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Updates that fix it
KB5002904: Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition); KB5002914: Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
CISA KEV
Not listed in the collected catalog
EPSS
0.6%; scored 20 Oct 2026
Public exploit code
No Nuclei template listed
Published
8 Sep 2026 07:00 UTC
Last revised
17 Sep 2026 07:00 UTC
Revision note
Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any actio…