CVE-2026-45649: CWE-284: Improper Access Control in Microsoft Microsoft Excel for Android
Improper access control in Office for Android allows an unauthorized attacker to perform spoofing locally.
AI Analysis
Technical Summary
This vulnerability in Microsoft Excel for Android (version 16.0.0.0) involves improper access control (CWE-284) that enables an unauthorized local attacker to perform spoofing attacks. The CVSS 3.1 vector indicates low attack complexity and no privileges required, but user interaction is needed. The vulnerability impacts confidentiality and integrity with no impact on availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker with local access and no privileges can exploit this vulnerability to spoof content or actions within Microsoft Excel for Android, potentially leading to high confidentiality and integrity impacts. There is no impact on availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft security update guide to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-45649: CWE-284: Improper Access Control in Microsoft Microsoft Excel for Android
Description
Improper access control in Office for Android allows an unauthorized attacker to perform spoofing locally.
CVSS v3.1
Score 7.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Excel for Android (version 16.0.0.0) involves improper access control (CWE-284) that enables an unauthorized local attacker to perform spoofing attacks. The CVSS 3.1 vector indicates low attack complexity and no privileges required, but user interaction is needed. The vulnerability impacts confidentiality and integrity with no impact on availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker with local access and no privileges can exploit this vulnerability to spoof content or actions within Microsoft Excel for Android, potentially leading to high confidentiality and integrity impacts. There is no impact on availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft security update guide to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T20:33:35.157Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45649","vendor":"Microsoft"}]
Threat ID: 6a284ce98dd33fbd85664ef5
Added to database: 06/09/2026, 17:27:05 UTC
Last enriched: 07/29/2026, 22:02:48 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 61
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