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VULNERABILITIES

CVE-2026-70309 Details

Description

Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70309 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-346Origin Validation Error[email protected]

Affected Products

ProductVersions
microsoft edge chromium
< 150.0.4078.65

CPE

  • cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-70309
NVD Published Date:
Aug 28, 2026
NVD Last Modified:
Aug 31, 2026
Source:
[email protected]
CVE-2026-70309 Details - Not Deferred