Account Enumeration Vulnerability in Umbraco CMS by Umbraco
CVE-2025-24011

5.3MEDIUM

Key Information:

Vendor

Umbraco

Status
Umbraco-cms
Vendor
CVE Published:
21 January 2025

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 14%

What is CVE-2025-24011?

Umbraco CMS, a widely used open-source .NET content management system, is susceptible to an account enumeration vulnerability. This flaw allows attackers to ascertain whether specific user accounts exist by analyzing the response codes and timing metrics of the management API. Affected versions include 14.0.0 through 14.2.x, with remediation provided in versions 14.3.2 and 15.1.2. As of now, there are no known workarounds, making it critical for users to update to the patched versions to safeguard against potential exploitation.

Affected Version(s)

Umbraco-CMS >= 14.0.0, < 14.3.2 < 14.0.0, 14.3.2

Umbraco-CMS >= 15.0.0, < 15.1.2 < 15.0.0, 15.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-24011-PoC
Created by Puben

References

https://github.com/umbraco/Umbraco-CMS/security/advisorie...
x_refsource_CONFIRM
https://github.com/umbraco/Umbraco-CMS/commit/559c6c9f312...
x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/commit/839b6816f2a...
x_refsource_MISC

EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.