Threat Intelligence / CVE / CVE-2026-41106

CVE-2026-41106 — Microsoft 365 Copilot

CVSS v3.1 9.3 (CRITICAL) · Priority 4.7/10 · Published 2026-07-02

As of 2026-07-03, CVE-2026-41106 is a CRITICAL-severity vulnerability in Microsoft 365 Copilot, CVSS v3.1 9.3. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-41106, most recently “Microsoft September 2026 Cloud Disclosure: 18 Elevation-of-Privilege, Information-Disclosure, and Spoofing Flaws Across Azure and Copilot AI Products, Plus a Windows Secure Kernel EoP (CVE-2026-85921)”.

Last updated: 2026-07-03

What is CVE-2026-41106?

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

The record classifies CVE-2026-41106 under weakness class CWE-601. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 80 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 9.3 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 4.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-07-02, last modified 2026-07-03

Is CVE-2026-41106 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

Affected products and versions

Microsoft: 365 Copilot

How to fix CVE-2026-41106

No vendor patch reference has been recorded for CVE-2026-41106 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-41106

1 tracked threat in the Threadlinqs corpus references CVE-2026-41106, either in the campaign’s CVE list or as an indicator on the campaign record.

Microsoft September 2026 Cloud Disclosure: 18 Elevation-of-Privilege, Information-Disclosure, and Spoofing Flaws Across Azure and Copilot AI Products, Plus a Windows Secure Kernel EoP (CVE-2026-85921) — CRITICAL · 2026-09-18

Sources

Enriched from CVE.org, NVD. Last verified by Threadlinqs on 2026-07-04. This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

msrc.microsoft.com — vendor advisory

Full detection coverage & IOCs for threats exploiting CVE-2026-41106 are available via the Threadlinqs MCP server (Purple tier). View plans →

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