CVE-2026-85885

CRITICAL
INFO Priority: 0.07 BB Relevance: 70/100
Published: 2026-09-17 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Changed
C: High
I: High
A: High

Description

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

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
microsoft 365_copilot -

References & Advisories (1)

Bug Bounty Relevance

70 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.9 / 10.0 v3.1
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

EPSS — Exploitation Probability

0.72%
Raw Score 0.007200
Percentile 53.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00720
2026-10-28
0.00720

Intelligence Sources

mitre ref →