CVE-2026-42832
Microsoft Office Spoofing Vulnerability
No known exploitation. EPSS puts it in the 23rd percentile. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- Microsoft Excel for AndroidAffected: ≥ 16.0.0.0, < 16.0.19822.20190Upgrade to: 16.0.19822.20190Stated by: CVE record
- Microsoft Office LTSC for Mac 2021Affected: ≥ 16.0.1, < 16.109.26051019Upgrade to: 16.109.26051019Stated by: CVE record
- Microsoft Office LTSC for Mac 2024Affected: ≥ 16.0.0, < 16.109.26051019Upgrade to: 16.109.26051019Stated by: CVE record
- Microsoft Word for AndroidAffected: ≥ 16.0.0.0, < 16.0.19822.20190Upgrade to: 16.0.19822.20190Stated by: CVE record
- Microsoft ExcelAffected: < 16.0.19822.20190Upgrade to: 16.0.19822.20190Stated by: NVD
Versions as the sources state them. 2 more products have version data. Full version matrix after sign-in
What it is
From the CVE record
Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.3% chance of exploitation activity in the next 30 days, which ranks it in the 23rd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
4 events over 7 days, from the signal feeds we watch.
- Patch availablerecord updated
- Publishedweakness classified
Affected products
- Microsoft Excel for AndroidConsumer Software / productivity
- Microsoft Office LTSC for Mac 2021Consumer Software / productivity
- Microsoft Office LTSC for Mac 2024Consumer Software / productivity
- Microsoft Word for AndroidConsumer Software
- Microsoft ExcelConsumer Software / productivity
- Microsoft Office LTSC 2024Consumer Software / productivity
- office long term servicing channelOperating Systems / windows
- wordConsumer Software / productivity
And 4 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Scored 7.7 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
In the news
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