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CVE-2024-21383: Microsoft Edge (Chromium-based) Spoofing Vulnerability

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-26 · updated 2026-06-17
• Weakness: CWE-347

Description

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Affected products

• Microsoft Edge (Chromium): before 121.0.2277.83 — fixed in 121.0.2277.83
• Microsoft Edge (Chromium): from 1.0.0 before 121.0.2277.83 — fixed in 121.0.2277.83

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 121.0.2277.83; Microsoft Edge (Chromium) 121.0.2277.83. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21383
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21383

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