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Critical

Privilege Escalation in Themeisle Masteriyo LMS PRO

IdentifiersCVE-2025-53209CWE-266· Incorrect Privilege Assignment

CVE-2025-53209 is an Incorrect Privilege Assignment vulnerability in the Themeisle Masteriyo LMS PRO WordPress plugin. The issue affects Masteriyo LMS PRO through version 2.20.0. Based on the available information, the flaw stems from improper privilege assignment logic that can allow unauthorized elevation of privileges within the application. Specific vulnerable functions, code paths, and exploitation mechanics are not provided in the available content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows privilege escalation in Masteriyo LMS PRO. The available CVSS v3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) indicates the issue is remotely exploitable over the network, requires low attack complexity, no privileges, and no user interaction, with high impact to confidentiality, integrity, and availability.

Mitigation

If you can’t patch tonight, do this now.

Until a patched version is available, reduce exposure by restricting access to the affected WordPress instance and administrative/plugin-related endpoints, minimizing untrusted user registration and account creation paths, reviewing role-assignment and privilege-related workflows in Masteriyo LMS PRO, and monitoring for unexpected privilege changes or creation of elevated accounts. Apply standard WordPress hardening and least-privilege controls.

Remediation

Patch, then assume compromise.

Upgrade Themeisle Masteriyo LMS PRO to a version newer than 2.20.0 once a vendor fix is available. If a patched release has already been published by the vendor, update to that fixed version or later.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
ThemeisleMasteriyo Lms Proapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

7 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2025-53209
NVD
nvd.nist.gov/vuln/detail/CVE-2025-53209
MITRE CWE · CWE-266
Incorrect Privilege Assignment
patchstack.com
patchstack.com/database/wordpress/plugin/learning-management-system-pro/vulnerability/wordpress-masteriyo-lms-pro-2-20-0-privilege-escalation-vulnerability?_s_id=cve