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Authenticator CVE-2026-26123

MEDIUM
Improper Authorization in Handler for Custom URL Scheme (CWE-939)
2026-03-10 secure@microsoft.com
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 20:16 nvd
MEDIUM 5.5

DescriptionCVE.org

Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.

AnalysisAI

Microsoft Authenticator contains an information disclosure vulnerability that allows local attackers to access sensitive data without requiring elevated privileges or user interaction beyond standard operation. The vulnerability stems from improper categorization of security controls, enabling unauthorized disclosure of confidential information on affected systems. No patch is currently available for this issue.

Technical ContextAI

Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.

RemediationAI

Monitor vendor advisories for a patch.

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CVE-2026-26123 vulnerability details – vuln.today

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