CVE-2026-80098

Copilot Studio Elevation of Privilege Vulnerability

Published Sep 3, 2026 CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:copilot_studio:-:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.
Title Copilot Studio Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft copilot Studio
Weaknesses CWE-347
CPEs cpe:2.3:a:microsoft:copilot_studio:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft copilot Studio
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 9:38 PM
Reserved
Aug 25, 2026, 6:37 PM
Status
Analyzed
Published
Sep 3, 2026, 11:17 PM
Modified
Sep 8, 2026, 5:53 PM