CVE-2026-45497 | BDVDB-2026-338103 Detail

MicrosoftMicrosoft 365 Copilot

Description#

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact low. 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-2026-45497

Exploit#

No public exploit known

History#

Version 12026-06-04Record published in the CVE List.
Version 22026-11-10Most recent update recorded in the CVE List.

Published

Published: 2026-06-04
Last modified: 2026-11-10

Vendor information

Vendor: Microsoft
Product: Microsoft 365 Copilot

All Microsoft vulnerabilities

Score

7.7 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 39.6.

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

7.7 High

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

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

CVSS v3.0

Not available

CVSS v2

Not available

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