CVE-2026-58616 MEDIUM

CVE-2026-58616: Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft Edge (Chromium-based)
Weakness CWE-362
Published August 28, 2026
Last update August 28, 2026
View on NVD All CVEs

CVSS base score

4.4/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.

Key dates

02Disclosure timeline

August 28, 2026 CVE published
August 28, 2026 Record updated