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CVE-2026-85885

Microsoft 365 Copilot Elevation of Privilege Vulnerability

CVSS 3.1 9.9 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 27 Oct 2026 02:23:01 UTC. Read the latest advisory.

cve-program · CVE-2026-85885

Published

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-85885

Published

Microsoft 365 Copilot Elevation of Privilege Vulnerability

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.

Source published
17 Sep 2026 22:55:55 UTC
Source modified
26 Oct 2026 23:25:59 UTC
Saved here
27 Oct 2026 02:23:01 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 16:29 UTC · 265 of 275 readable · 263 fully read · documentation 469/469 current

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