CVE-2026-42895

Name: CVE-2026-42895
Creator: NVD / NIST
Published: 2026-06-19T21:16:43.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.39%

Last modified Jun 26, 2026

CVE-2026-42895 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to perform tampering over a network.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.39%

30.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Microsoft	365 Copilot	All versions

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42895Vendor Advisory

Timeline

Published: Jun 19, 2026
Last Modified: Jun 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42895?

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

How severe is CVE-2026-42895?

CVE-2026-42895 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42895?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42895?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST