Vulnerability · Published May 12, 2026 · Assigned by microsoft
CVE-2026-42832Microsoft Office Spoofing Vulnerability
High 7.7
In plain English
A high-severity improper access control in Microsoft Excel for Android from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.2%top 87.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Excel for Android | 16.0.0.0 – before 16.0.19822.20190 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 – before 16.109.26051019 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – before 16.109.26051019 |
| Microsoft | Microsoft Word for Android | 16.0.0.0 – before 16.0.19822.20190 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Microsoft Office Spoofing Vulnerability vendor-advisory, patch