High severity · published Jan 16, 2026
CVE-2026-21223
Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Microsoft Edge (Chromium-based) · Microsoft
1.0.0.0 before 144.0.3719.82 · source: vendor
EC
Edge Chromium · Microsoft
before 144.0.3719.82 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21223
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21223
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223
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