CVE-2026-21223

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-21223
Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223 Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
History

22 Feb 2026, 17:16

Type Values Removed Values Added
Summary (en) Microsoft Edge Elevation Service exposes a privileged COM interface that inadequately validates the privileges of the calling process. A standard (non‑administrator) local user can invoke the IElevatorEdge interface method LaunchUpdateCmdElevatedAndWait, causing the service to execute privileged update commands as LocalSystem. This allows a non‑administrator to enable or disable Windows Virtualization‑Based Security (VBS) by modifying protected system registry keys under HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard. Disabling VBS weakens critical platform protections such as Credential Guard, Hypervisor‑protected Code Integrity (HVCI), and the Secure Kernel, resulting in a security feature bypass. (en) Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.
CVSS v2 : unknown
v3 : 5.1 		v2 : unknown
v3 : 7.1

03 Feb 2026, 18:42

Type Values Removed Values Added
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223 - () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223 - Vendor Advisory
CPE cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
First Time Microsoft edge Chromium
Microsoft

16 Jan 2026, 22:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-16 22:16

Updated : 2026-02-22 17:16

NVD link : CVE-2026-21223

Mitre link : CVE-2026-21223

CVE.ORG link : CVE-2026-21223

JSON object : View

Products Affected

microsoft

  • edge_chromium
CWE
CWE-269

Improper Privilege Management