CVE-2026-45497

FAUCET Score

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

First published: Jun 4, 2026Last modified: Jun 4, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:copilot:-:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

1.8

Impact Score

5.3

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.45%

Probability of exploitation in next 30 days

EPSS Percentile

36.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0045 is in the 25th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-45497Critical

Microsoft M365 Copilot Remote Code Execution Vulnerability

Jun 4, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-45497

Vendor Advisory