CVE-2026-45649: Office for Android Spoofing Vulnerability

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-09 · updated 2026-09-24
Weakness: CWE-284

Description

Improper access control in Office for Android allows an unauthorized attacker to perform spoofing locally.

Affected products

Microsoft Excel 2013 Service Pack 1: all versions
Microsoft PowerPoint for Android: all versions
Microsoft Word for Android: all versions
Microsoft Excel for Android: from 16.0.0.0 before 16.0.20131.20024 — fixed in 16.0.20131.20024
Microsoft PowerPoint for Android: from 16.0.0.0 before 16.0.20131.20024 — fixed in 16.0.20131.20024
Microsoft Word for Android: from 16.0.0.0 before 16.0.20131.20024 — fixed in 16.0.20131.20024

How to fix

Upgrade to a fixed version: Microsoft Excel for Android 16.0.20131.20024; Microsoft PowerPoint for Android 16.0.20131.20024; Microsoft Word for Android 16.0.20131.20024. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45649

Get alerted when CVE-2026-45649 or the next vulnerability affects your stack