CVE-2024-21388: Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 32.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-30 · updated 2026-06-17
Weakness: CWE-20

Description

Microsoft Edge (Chromium-based) Elevation of Privilege 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 121.0.2277.98 — fixed in 121.0.2277.98

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 121.0.2277.83; Microsoft Edge (Chromium) 121.0.2277.98. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21388
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21388

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