CVE-2026-24301 | BDVDB-2026-360796 Detail

MicrosoftCopilot Web

Description#

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')

References#

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24301

Exploit#

No public exploit known

History#

Version 12026-08-18Record published in the CVE List.
Version 22026-10-30Most recent update recorded in the CVE List.

Published

Published: 2026-08-18
Last modified: 2026-10-30

Vendor information

Vendor: Microsoft
Product: Copilot Web

All Microsoft vulnerabilities

Score

8.8 High

EPSS

1.1%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 66.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Command Injection

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).