Vulnerability in Microsoft Excel
CVE-2026-42832
Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Microsoft Excel
- Microsoft Excel For Android — versions 16.0.0.0
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2024 — versions 16.0.0
- Microsoft Word For Android — versions 16.0.0.0
- Microsoft Office — versions 2021, 2024
- Microsoft Office Long Term Servicing Channel — versions 2021
- Microsoft Word
Weakness classification (CWE)
References
- Microsoft Office Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42832?
- CVE-2026-42832 is a high-severity vulnerability in Microsoft Excel, classified under Improper Access Control. CVSS score: 7.7/10. Published 2026-05-12.
- How severe is CVE-2026-42832?
- High severity. CVSS v3 base score is 7.7 out of 10.