PT-2026-32843 · Microsoft · 365 Apps For Enterprise+1

F4 + 1 · CVE-2026-32188 · Published 2026-04-14 · Updated 2026-04-17

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions Microsoft 365 Apps for Enterprise versions 16.0.1 through 16.0.1

Description An out-of-bounds read in Microsoft Office Excel allows an unauthorized local attacker to disclose sensitive information. This occurs when a user opens a malicious Excel file that triggers a read operation beyond the allocated memory bounds, potentially affecting the system.

Recommendations Update Microsoft 365 Apps for Enterprise to a version newer than 16.0.1.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-05488

CVE-2026-32188

Affected Products

365 Apps For Enterprise

Office Excel

References · 6

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32188 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05488 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-32188 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-32188 · Security Note
• https://twitter.com/RedHornet_Intel/status/2044117983144849469 · Twitter Post
• https://twitter.com/CVEnew/status/2045112945181692288 · Twitter Post