CVE-2026-33111

HIGH

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Title source: cna

Description

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

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory patch

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33111

Scores

CVSS v3 7.5

EPSS 0.0005

EPSS Percentile 15.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-77

Status published

Products (2)

Microsoft/Copilot Chat (Microsoft Edge) -

microsoft/copilot_chat

Published May 07, 2026

Tracked Since May 08, 2026