Account
CVE-2025-21396
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.2 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 2.05%. |
| Exploit ScenarioDerived | A remote attacker could access resources or perform actions without proper authorization checks by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAIv1 – Mar 28, 2026
Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network. Affected products include: Microsoft Account.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network.
Executive ViewAI
Organizations using Missing authorization in Microsoft Account face notable risk from CVE-2025-21396, a missing authorization vulnerability rated CVSS 8.2. Attackers could bypass security controls to gain unauthorized access to protected resources and sensitive data. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
Microsoft Account has a cross-site scripting vulnerability allowing unauthenticated attackers to execute scripts in the
Using unsafe PendingIntent in Samsung Account in versions 10.8.0.4 in Android P(9.0) and below, and 12.1.1.3 in Android
Improper privilege management vulnerability in Samsung Account prior to 13.2.00.6 allows attackers to get the access_tok
Exposure of Sensitive Information vulnerability in Samsung Account prior to version 13.2.00.6 allows attacker to access
Use of implicit intent for sensitive communication vulnerability in startTncActivity in Samsung Account prior to version
Use of implicit intent for sensitive communication vulnerability in startSignIn in Samsung Account prior to version 14.5
Use of implicit intent for sensitive communication vulnerability in startNameValidationActivity in Samsung Account prior
Use of implicit intent for sensitive communication vulnerability in startMandatoryCheckActivity in Samsung Account prior
Use of implicit intent for sensitive communication vulnerability in startEmailValidationActivity in Samsung Account prio
Use of implicit intent for sensitive communication vulnerability in startAgreeToDisclaimerActivity in Samsung Account pr
A security vulnerability in Samsung Account (CVSS 4.0) that allows local attacker. Remediation should follow standard vu
Improper handling of insufficient permissions or privileges in Samsung Account prior to version 15.5.00.18 allows local
GitHub PoC
Exploit-DB