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CVE-2026-80098

critical · 9.3

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

9.3
CVSS
0.5%
EPSS (exploit prob.)
42nd
EPSS percentile
2026-09-03
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Weaknesses

CWE-347

Affected products

VendorProductAffected versions
microsoftcopilot_studioall versions

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-80098