CVE-2025-13833
Insecure TLS Fingerprint Validation in ForeScout SecureConnector Configuration Enables Remote Code Execution
Description
A vulnerability exists in SecureConnector for Windows when the “Additional Appliance Connections” setting is enabled and the agent’s configuration file contains more than three trusted‑server entries. Some entries omit TLS certificate fingerprints, which allows the agent to accept and establish sessions with a malicious server. An attacker who controls the wired or wireless network can redirect traffic to a malicious server. The attacker can then use the agent’s built‑in command/file features to execute arbitrary commands as SYSTEM, granting full administrative control and the ability to disable endpoint protections or exfiltrate data.
INFO
Published Date :
Oct. 26, 2026, 9:17 p.m.
Last Modified :
Nov. 3, 2026, 6:17 p.m.
Remotely Exploit :
No
Source :
a14582b7-06f4-4d66-8e82-3d7ba3739e88
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | a14582b7-06f4-4d66-8e82-3d7ba3739e88 | ||||
| CVSS 4.0 | HIGH | a14582b7-06f4-4d66-8e82-3d7ba3739e88 |
Solution
- Disable 'Additional Appliance Connections' if not needed.
- Ensure all trusted server entries include fingerprints.
- Update agent configuration file.
- Apply vendor patches when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-13833.
| URL | Resource |
|---|---|
| https://support.forescout.com |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-13833 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-13833
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-13833 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-13833 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 03, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-13833', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-11-03T17:32:55.256826Z'} -
CVE Translated by [email protected]
Oct. 28, 2026
Action Type Old Value New Value Added Translation Title: SecureConnector de Forescout Technologies, Description: Existe una vulnerabilidad en SecureConnector para Windows cuando la configuración ’Additional Appliance Connections’ está habilitada y el archivo de configuración del agente contiene más de tres entradas de servidor de confianza. Algunas entradas omiten las huellas digitales del certificado TLS, lo que permite al agente aceptar y establecer sesiones con un servidor malicioso. Un atacante que controla la red cableada o inalámbrica puede redirigir el tráfico a un servidor malicioso. El atacante puede entonces usar las funciones integradas de comando/archivo del agente para ejecutar comandos arbitrarios como SYSTEM, otorgando control administrativo total y la capacidad de desactivar las protecciones del endpoint o exfiltrar datos. -
CVE Modified by a14582b7-06f4-4d66-8e82-3d7ba3739e88
Oct. 27, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/13xxx/CVE-2025-13833.json">CVE-2025-13833</a> -
New CVE Received by a14582b7-06f4-4d66-8e82-3d7ba3739e88
Oct. 26, 2026
Action Type Old Value New Value Added Description A vulnerability exists in SecureConnector for Windows when the “Additional Appliance Connections” setting is enabled and the agent’s configuration file contains more than three trusted‑server entries. Some entries omit TLS certificate fingerprints, which allows the agent to accept and establish sessions with a malicious server. An attacker who controls the wired or wireless network can redirect traffic to a malicious server. The attacker can then use the agent’s built‑in command/file features to execute arbitrary commands as SYSTEM, granting full administrative control and the ability to disable endpoint protections or exfiltrate data. Added CVSS V4.0 AV:A/AC:L/AT:P/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:X/V:X/RE:X/U:X Added CWE CWE-295 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/13xxx/CVE-2025-13833.json">CVE-2025-13833</a> Added Reference https://support.forescout.com