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CVE-2026-80098Copilot Studio Elevation of Privilege Vulnerability

Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.

10.0 CRITICALEPSS 0.48%Not in KEVNVD: Analyzed

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
10.0CRITICAL3.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.3CRITICAL3.1microsoft (CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
9.3CRITICAL3.1microsoft (CNA)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

Details

CVE ID
CVE-2026-80098
Status
Analyzed
Assigner (CNA)
microsoft
Published
Sep 3, 2026
Last modified
2026-10-31 16:18 UTC
Weaknesses
  • CWE-347 · Improper Verification of Cryptographic Signature

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:48 UTC.