Information Disclosure Vulnerability in Microsoft Authenticator
CVE-2026-26123

5.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Authenticator For Android
Microsoft Authenticator For iOS
Vendor
CVE Published:
10 March 2026

What is CVE-2026-26123?

An information disclosure vulnerability exists in Microsoft Authenticator, which could allow an unauthorized attacker to obtain sensitive information locally. This flaw may permit malicious actors to exploit the application, posing a risk to user data integrity. Users are advised to review their Authenticator settings and ensure they are on the latest version to mitigate potential threats.

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Affected Version(s)

Microsoft Authenticator for Android 6.0.0 < 6.2511.7533

Microsoft Authenticator for IOS 6.0.0 < 6.8.40

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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