7.7High

CVE-2026-42832Microsoft Office Spoofing Vulnerability

Microsoft Microsoft Excel for Android; Microsoft Microsoft Office LTSC for Mac 2021; Microsoft Microsoft Office LTSC for Mac 2024; Microsoft Microsoft Word for… Published: 2026-05-12 19:59 (6 months ago)

Description

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

Weakness (CWE): CWE-284

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
microsoft	excel	16.0.0.0 – < 16.0.19822.20190
Microsoft	Microsoft Excel for Android	16.0.0.0 – < 16.0.19822.20190
Microsoft	Microsoft Office LTSC for Mac 2021	16.0.1 – < 16.109.26051019
Microsoft	Microsoft Office LTSC for Mac 2024	16.0.0 – < 16.109.26051019
Microsoft	Microsoft Word for Android	16.0.0.0 – < 16.0.19822.20190
microsoft	office	2024
microsoft	office long term servicing channel	2021
microsoft	office macos 2021	16.0.1 – < 16.109.26051019
microsoft	office macos 2024	16.0.0 – < 16.109.26051019
microsoft	word	16.0.0.0 – < 16.0.19822.20190

References and patches

Microsoft Office Spoofing Vulnerability vendor-advisorypatchVendor Advisory

CPE matches (NVD) (4)

cpe:2.3:a:microsoft:excel:*:*:*:*:*:android:*:* < 16.0.19822.20190
cpe:2.3:a:microsoft:office:2024:*:*:*:ltsc:macos:*:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:word:*:*:*:*:*:android:*:* < 16.0.19822.20190

CVSS score

7.7High

Source: microsoft · CVSS 3.1

Attack vector: Local
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

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

All scores (3)

cna	CVSS 3.1	7.7High
secure@microsoft.com	CVSS 3.1	7.7High
nvd	CVSS 3.1	5.5Medium

EPSS (chance of exploitation in 30 days)

0.22%

higher than 13% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2026-04-30
Published2026-05-12 19:59
Reached IP-DB2026-10-24 23:48
Last updated2026-10-26 21:10

Assigned by (CNA): microsoft
NVD status: Analyzed

View at source: CVE.org · NVD

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