CVE-2026-41614: CWE-284: Improper Access Control in Microsoft M365 Copilot for Desktop
Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
AI Analysis
Technical Summary
This vulnerability in Microsoft M365 Copilot for Desktop (version 1.0.0) involves improper access control (CWE-284) that enables a local attacker without privileges to spoof the application. The CVSS 3.1 vector indicates low attack complexity, no privileges required, no user interaction, and high confidentiality impact. Microsoft has published an official fix to address this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to spoof the M365 Copilot for Desktop application, potentially leading to disclosure of sensitive information due to the high confidentiality impact. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of M365 Copilot for Desktop version 1.0.0 should apply the vendor-provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41614 to remediate this vulnerability.
CVE-2026-41614: CWE-284: Improper Access Control in Microsoft M365 Copilot for Desktop
Description
Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
CVSS v3.1
Score 6.2medium
Affected software
pkg:github/microsoft/m365-copilot-for-desktopRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft M365 Copilot for Desktop (version 1.0.0) involves improper access control (CWE-284) that enables a local attacker without privileges to spoof the application. The CVSS 3.1 vector indicates low attack complexity, no privileges required, no user interaction, and high confidentiality impact. Microsoft has published an official fix to address this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to spoof the M365 Copilot for Desktop application, potentially leading to disclosure of sensitive information due to the high confidentiality impact. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of M365 Copilot for Desktop version 1.0.0 should apply the vendor-provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41614 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-21T22:14:12.924Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41614","vendor":"Microsoft"}]
Threat ID: 6a036562cbff5d861008cc54
Added to database: 05/12/2026, 17:37:38 UTC
Last enriched: 06/25/2026, 21:26:16 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 59
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