Vulnerability · Published Sep 3, 2026 · Assigned by microsoft
CVE-2026-80098Copilot Studio Elevation of Privilege Vulnerability
Critical 9.3
In plain English
A critical-severity security flaw in Microsoft Copilot Studio from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)0.5%top 57.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Copilot Studio | - |
Weakness: CWE-347 · 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
References
- Copilot Studio Elevation of Privilege Vulnerability vendor-advisory, patch