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TI-2026-30154 Aliases CVE-2026-41614GHSA-r8h5-x7jj-cjjx

M365 Copilot for Desktop Spoofing Vulnerability

Priority LOW 28CWE-284Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00363 30th percentileScored 2026-11-07
Fix Fixed M365 Copilot for Desktop (Microsoft): 19.2604.43111.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftM365 Copilot for Desktop1.0.0 to before 19.2604.43111.019.2604.43111.0Patch availableCNA
  • M365 Copilot for Desktop VendorMicrosoft Affected 1.0.0 to before 19.2604.43111.0 Fixed in 19.2604.43111.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:windows:*:*before 19.2604.43111.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:windows:*:* Versions before 19.2604.43111.0 Vulnerable ·Microsoft

Remediation

  • Fix · CNA M365 Copilot for Desktop (Microsoft) Fixed in 19.2604.43111.0

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
M365 Copilot for DesktopFixed 19.2604.43111.0 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41614
  2. 2026-10-03 Alias added: GHSA-r8h5-x7jj-cjjx

References

Patch 1

  • TI-2025-37796 GDI+ Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2025-23775 M365 Copilot Information Disclosure Vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2025-33667 GDI+ Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2021-19684 Microsoft Office app Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.6
  • TI-2026-37251 Microsoft M365 Copilot Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2026-39054 M365 Copilot Information Disclosure Vulnerability CVSS 3.1CRITICAL 9.8
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences