CVE-2026-41106

FAUCET Score

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

First published: Jul 2, 2026Last modified: Jul 2, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:365_copilot:-:::::::*

CVSS Data

CVSS version used by this source: 3.1

9.3CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

Exploitability Score

2.8

Impact Score

5.8

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.53%

Probability of exploitation in next 30 days

EPSS Percentile

41.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0053 is in the 47th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-41106Critical

Microsoft 365 Copilot Elevation of Privilege Vulnerability

Jul 2, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-41106

Vendor Advisory