CVE-2026-26123: CWE-939: Improper Authorization in Handler for Custom URL Scheme in Microsoft Microsoft Authenticator for Android
Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CWE-939) in Microsoft Authenticator for Android 6.0.0 arises from improper authorization checks in the handling of a custom URL scheme. An attacker can exploit this to disclose information locally without proper privileges. The CVSS vector indicates the attack requires local access with low complexity and no privileges, but user interaction is needed. The impact is limited to confidentiality with no integrity or availability effects. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to disclose sensitive information stored or processed by Microsoft Authenticator for Android 6.0.0. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users and administrators should apply the official update from Microsoft to Microsoft Authenticator for Android version 6.0.0 or later to remediate this issue. Since this is not a cloud service, remediation depends on updating the client application.
CVE-2026-26123: CWE-939: Improper Authorization in Handler for Custom URL Scheme in Microsoft Microsoft Authenticator for Android
Description
Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-939) in Microsoft Authenticator for Android 6.0.0 arises from improper authorization checks in the handling of a custom URL scheme. An attacker can exploit this to disclose information locally without proper privileges. The CVSS vector indicates the attack requires local access with low complexity and no privileges, but user interaction is needed. The impact is limited to confidentiality with no integrity or availability effects. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to disclose sensitive information stored or processed by Microsoft Authenticator for Android 6.0.0. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users and administrators should apply the official update from Microsoft to Microsoft Authenticator for Android version 6.0.0 or later to remediate this issue. Since this is not a cloud service, remediation depends on updating the client application.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T15:52:13.911Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b071392f860ef943a5fd50
Added to database: 3/10/2026, 7:30:01 PM
Last enriched: 4/18/2026, 2:16:11 PM
Last updated: 4/28/2026, 6:54:50 AM
Views: 86
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