Vulnerability Intelligence Report
Microsoft 365 Copilot Elevation of Privilege Vulnerability
CVE-2026-33102
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
Exploitability:2.9
Impact Score:5.8
EPSS Probability:0.72%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-601 ↗CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft 365 Copilot | - (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.716%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-03-17T20:15:23 |
| Published | 2026-04-23T21:35:48 |
| Patch Date | 2026-04-23 |
| Last Updated | 2026-09-25T17:24:46 |
Community Chatter & Buzz