Privilege Escalation in Masteriyo LMS Role Assignment

Incorrect Privilege Assignment vulnerability in Themeisle Masteriyo LMS PRO allows Privilege Escalation. This issue affects Masteriyo LMS PRO: from n/a through 2.20.0.

Casky was already ahead

This CVE exploits attack patterns that Casky's 203matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2025-53209 represents a critical privilege escalation vulnerability in Themeisle Masteriyo LMS PRO versions up to 2.20.0, stemming from incorrect privilege assignment logic (CWE-266). This flaw allows attackers to escalate their account privileges beyond their intended role, potentially gaining administrative access to learning management systems. Organizations deploying Masteriyo LMS PRO for course delivery, student management, and institutional training are directly affected. With a CVSS score of 9.8, this vulnerability poses an immediate threat to educational institutions, corporate training platforms, and any organization relying on Masteriyo for credential management and content protection.

Casky's 203 mapped security skills leverage Claude AI's extended reasoning to detect Privilege Escalation attacks (MITRE ATT&CK TA0004) by analyzing role-based access control (RBAC) enforcement patterns, permission validation anomalies, and unauthorized capability invocations. Practitioners using Casky would identify findings such as: unexpected role elevation in user provisioning workflows, missing authorization checks before privilege-granting functions, inconsistent capability mappings between user roles, and privilege assignment operations that bypass standard permission hierarchies. The platform's skills flag requests attempting to assume higher-privileged roles without proper authentication context, detecting both direct privilege escalation attempts and subtle authorization logic bypasses that could lead to administrative takeover in Masteriyo instances.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

203 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2025-53209.

analyzing-cloud-storage-access-patterns

cloud security · low

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analyzing-kubernetes-audit-logs

container security · low

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analyzing-office365-audit-logs-for-compromise

cloud security · low

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2025-53209

Casky has 203 skills that investigate the attack patterns behind CVE-2025-53209. Run one and get CVSS-scored findings in 3 minutes.

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