CVE-2026-59118
Copilot Cowork Elevation of Privilege Vulnerability
CVSS Score
9.3
EPSS Score
0.0%
EPSS Percentile
0th
Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.
| Vendor | microsoft |
| Product | copilot cowork |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Aug 6, 2026 |
| Last Updated | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Copilot Cowork
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