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Vulnerability record · CVE-2026-45474 · published 9 June 2026

CVE-2026-45474: Microsoft 365 apps use after free vulnerability

Microsoft · 365 Apps

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

8.4 CVSS 3.1 High EPSS 0.36% · top 72.3% CWE-416 · Use after freeCWE-787 · Out-of-bounds write
8.4CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
1References
23 Jul 2026Last modified by NVD

Description

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45474 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-45474), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.