Vulnerability in Microsoft 365_apps

CVE-2026-35436

Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.

EPSS: 0.000 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft 365_apps
Microsoft 365 Apps For Enterprise — versions 16.0.1
Microsoft Office 2019 — versions 19.0.0
Microsoft Office Ltsc 2021 — versions 16.0.1
Microsoft Office Ltsc 2024 — versions 16.0.0
Microsoft Office — versions 2019
Microsoft Office_long_term_servicing_channel — versions 2021, 2024

Weakness classification (CWE)

CWE-1220

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35436?: CVE-2026-35436 is a high-severity vulnerability in Microsoft 365_apps, classified under CWE-1220. CVSS score: 8.8/10. Published 2026-05-12.
How severe is CVE-2026-35436?: High severity. CVSS v3 base score is 8.8 out of 10.