CVE-2026-45645

Published Jun 9, 2026

Last updated 17 hours ago

Overview

Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Source
secure@microsoft.com
NVD status
Analyzed
Products
365_apps, microsoft_365, office_2016, office_2019, office_2021, office_2024

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secure@microsoft.com
CWE-822
nvd@nist.gov
CWE-787

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.