CVE-2026-41100: exploitation status and patch state

CVE-2026-41100 · CVSS 4.4 MEDIUM · EPSS <1% · patch available

Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.

Is CVE-2026-41100 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at <1%.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

• Release Notes

What PlainSec published about CVE-2026-41100

• Patched Microsoft Android Apps Can Still Leak Access (2026-06-03)

Primary sources

• NVD record
• Microsoft Release Notes

What this record does not say

• No affected package data.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.