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 (CVE-2026-45649) in Microsoft Excel for Android is classified as CWE-284 (Improper Access Control). It enables an unauthorized attacker with local access to perform spoofing attacks, potentially leading to high confidentiality and integrity impacts. The CVSS 3.1 base score is 7.1, reflecting the local attack vector with low complexity and no privileges required but requiring user interaction. Microsoft has published an official fix for this issue.
Potential Impact
The vulnerability allows an attacker to spoof content or actions within Microsoft Excel for Android, potentially misleading users or compromising data confidentiality and integrity. 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 vendor's patch as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45649 for the update details and installation instructions.
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
Microsoft
Microsoft Excel for Android
Microsoft
Microsoft PowerPoint for Android
Microsoft
Microsoft Word for Android
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45649) in Microsoft Excel for Android is classified as CWE-284 (Improper Access Control). It enables an unauthorized attacker with local access to perform spoofing attacks, potentially leading to high confidentiality and integrity impacts. The CVSS 3.1 base score is 7.1, reflecting the local attack vector with low complexity and no privileges required but requiring user interaction. Microsoft has published an official fix for this issue.
Potential Impact
The vulnerability allows an attacker to spoof content or actions within Microsoft Excel for Android, potentially misleading users or compromising data confidentiality and integrity. 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 vendor's patch as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45649 for the update details and installation instructions.
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: 08/14/2026, 13:44:54 UTC
Last updated: 09/12/2026, 22:01:34 UTC
Views: 81
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