PT-2026-47944 · Microsoft · 365 Apps For Enterprise+2

CVE-2026-45457 · Published 2026-06-09 · Updated 2026-06-19

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 and Microsoft 365 Apps for Enterprise (affected versions not specified)

Description An untrusted pointer dereference in Microsoft Office Word and a buffer over-read in Microsoft Office and Microsoft 365 Apps for Enterprise may allow an unauthorized attacker to execute arbitrary code locally. A buffer over-read occurs when a program reads data past the end of the intended buffer, potentially exposing sensitive information from memory.

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:2026-08342

CVE-2026-45457

Affected Products

365 Apps For Enterprise

Office

Office Word

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-45457 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45457 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-08342 · Security Note
• https://t.me/cveNotify/171210 · Telegram Post