CVE-2025-41077
IDOR in Viafirma Inbox 4.5.13 Enables Admin Account Takeover
Publication date: 2026-01-12
Last updated on: 2026-01-12
Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| viafirma | inbox | to 4.5.27 (exc) |
| viafirma | inbox | 4.5.27 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-639 | The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-41077 is an Insecure Direct Object Reference (IDOR) vulnerability in Viafirma Inbox version 4.5.13 and earlier. It allows any authenticated user, even without special privileges, to list all users and access or modify their data, including email addresses. By changing email addresses, an attacker can exploit the password recovery feature to impersonate any user, including administrators, gaining unauthorized access. [1]
How can this vulnerability impact me? :
This vulnerability can lead to unauthorized access to the application by allowing attackers to impersonate any user, including those with administrative privileges. This can result in data breaches, unauthorized data modification, and potential full control over the affected system. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection involves verifying if the Viafirma Inbox version is 4.5.13 or prior, as these versions are vulnerable. Since the vulnerability allows any authenticated user to list all users and modify their data, testing can be done by attempting to enumerate users and modify email addresses via the application interface or API with an authenticated user account. Specific commands are not provided in the resources. [1]
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to upgrade Viafirma Inbox to version 4.5.27 or later, where this vulnerability has been fixed. Additionally, restrict access to authenticated users and monitor for suspicious activity involving user enumeration or email modification. [1]
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided resources do not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.