← Vulnerability feed

Vulnerability record · CVE-2025-13953 · published 10 December 2025

CVE-2025-13953: Authentication bypass by spoofing vulnerability

Bypass vulnerability in the authentication method in the GTT Tax Information System application, related to the Active Directory (LDAP) login method. Authentication is performed through a local WebSocket, but the web application does not properly validate the authenticity or origin of the data received, allowing an attacker with access to the local machine or internal network to impersonate the legitimate WebSocket and inject manipulated information. Exploiting this vulnerability could allow an attacker to authenticate as any user in the domain, without the need for valid credentials, compromising the confidentiality, integrity, and availability of the application and its data.

9.3 CVSS 4.0 Critical EPSS 0.57% · top 55.1% CWE-290 · Authentication bypass by spoofing Deferred
9.3CVSS 4.0 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Bypass vulnerability in the authentication method in the GTT Tax Information System application, related to the Active Directory (LDAP) login method. Authentication is performed through a local WebSocket, but the web application does not properly validate the authenticity or origin of the data received, allowing an attacker with access to the local machine or internal network to impersonate the legitimate WebSocket and inject manipulated information. Exploiting this vulnerability could allow an attacker to authenticate as any user in the domain, without the need for valid credentials, compromising the confidentiality, integrity, and availability of the application and its data.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.incibe.es/en/incibe-cert/notices/aviso/bypass-authentication-method-gtt-sistema-de-informacion-tributario

Track CVE-2025-13953 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.5CVE-2023-50224TP-Link router httpd authentication bypass exposes stored credentialsThe httpd service on affected TP-Link router firmware contains an improper authentication flaw (CWE-290) that lets a network-adjacent attacker bypass…KEVEPSS 16%analysed10.0CVE-2024-54085AMI MegaRAC SPx BMC authentication bypass via Redfish Host InterfaceAMI's SPx BMC implementation contains an authentication bypass reachable remotely through the Redfish Host Interface, classified as CWE-290 (authenti…KEVEPSS 61%analysed9.8CVE-2024-4358Progress Telerik Report Server authentication bypass via spoofingTelerik Report Server 2024 Q1 (10.0.24.305) and earlier on IIS contains an authentication bypass by spoofing (CWE-290). An unauthenticated remote att…KEVEPSS 97%analysed9.8CVE-2022-24112Apache APISIX batch-requests plugin auth bypass enables RCEThe batch-requests plugin in Apache APISIX can be abused to bypass the Admin API IP restriction because a code bug defeats the check that overrides t…KEVEPSS 96%analysed9.8CVE-2022-23131Zabbix Frontend SAML SSO authentication bypass via session spoofingZabbix Frontend fails to verify the user login stored in the session when SAML SSO authentication is enabled, allowing session data to be modified. A…KEVEPSS 96%analysed

Source: NIST National Vulnerability Database (record CVE-2025-13953), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.