CVE-2026-47645
HIGH EPSS 32.6%
Published Jun 19, 20261w ago · Modified Jun 24, 20266d ago
8.8 CVSS 3.1
Published Jun 19, 2026 1w ago
Last Modified Jun 24, 2026 6d ago
Description
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
32.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-601
References 1
- msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47645
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.