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CVE-2026-45495: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-18 · updated 2026-10-14
• Weakness: CWE-35

Description

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Affected products

• Microsoft Edge (Chromium): before 148.0.3967.70 — fixed in 148.0.3967.70
• Microsoft Edge (Chromium): from 1.0.0.0 before 148.0.3967.70 — fixed in 148.0.3967.70

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 148.0.3967.70; Microsoft Edge (Chromium) 148.0.3967.70. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45495

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