CVE-2026-41614

M365 Copilot for Desktop Spoofing Vulnerability

At a glance

Severity: MEDIUM 6.2
EPSS: EPSS 0.36 % · percentile 30 (2026-10-27)
State: PUBLISHED
Published: 2026-05-12
Updated: 2026-08-10
Assigner: microsoft
NVD status: Analyzed

Description

Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.2	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	MEDIUM 6.2	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-284

European references

ENISA EUVD · EUVD-2026-29697
GCVE · GCVE-0-2026-41614

CERT-FR advisories

CERTFR-2026-AVI-0588 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:windows:*:* < 19.2604.43111.0

Affected products

Product	Versions
Microsoft · M365 Copilot for Desktop	affected 1.0.0 < 19.2604.43111.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41614

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD