---
id: CVE-2025-13833
title: >-
  Insecure TLS Fingerprint Validation in ForeScout SecureConnector Configuration
  Enables Remote Code Execution
summary: >-
  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 fi…
severity: high
cvss: 7.7
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-295
vendor: Forescout Technologies
product: SecureConnector
affected:
  - SecureConnector < 11.3.20
published: '2026-10-26'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T13:04:51.882Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-13833'
references:
  - url: 'https://support.forescout.com'
tags:
  - cve.org
epss: 0.0015
epssPercentile: 0.04099
ingestedAt: '2026-10-26T20:39:42.562Z'
---

## Overview

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.

## Affected

- `SecureConnector < 11.3.20`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.