PT-2026-40195 · Microsoft · Office Excel

Published 2026-05-12 · Updated 2026-05-19 · CVE-2026-40360

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Office Excel (affected versions not specified)

Description An out-of-bounds read allows an unauthorized attacker to disclose sensitive information locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-06660

CVE-2026-40360

Affected Products

Office Excel

References · 6

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40360 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-40360 · Security Note
• https://bdu.fstec.ru/vul/2026-06660 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360 · Vendor Advisory
• https://t.me/cveNotify/164065 · Telegram Post
• https://feedly.com/cve/CVE-2026-40360 · Note