CVE-2024-21390: Microsoft Authenticator Elevation of Privilege Vulnerability

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-12 · updated 2026-06-17
Weakness: CWE-287

Description

Microsoft Authenticator Elevation of Privilege Vulnerability

Affected products

Microsoft Authenticator for Android: before 6.2401.0617 — fixed in 6.2401.0617
Microsoft Authenticator for Android: from 1.0.0 before 6.2401.0617 — fixed in 6.2401.0617

How to fix

Upgrade to a fixed version: Microsoft Authenticator for Android 6.2401.0617; Microsoft Authenticator for Android 6.2401.0617. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21390
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21390

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