CVE-2026-45461

Microsoft Office Remote Code Execution Vulnerability

CVE-2026-45461 is fixed in 2 products on 1 platform, first by KB5002878, released June 9, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
8.4
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile

<p>Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Office 2016 (32-bit edition) KB5002878 Jun 9, 2026
Microsoft Office 2016 (64-bit edition) KB5002878 Jun 9, 2026