CVE-2026-45459
Microsoft Excel Security Feature Bypass Vulnerability
Vexday Risk Score
8Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 3.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
09 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft 365 Apps for EnterpriseMicrosoft · Microsoft Office 365 for MacMicrosoft · Microsoft Office LTSC 2024Microsoft · Microsoft Office LTSC for Mac 2021Microsoft · Microsoft Office LTSC for Mac 2024Want to know if your infrastructure is exposed to this?
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