Vulnerability details

CVE-2025-13833

Forescout Technologies SecureConnector

Insecure TLS Fingerprint Validation in ForeScout SecureConnector Configuration Enables Remote Code Execution

CVSS 4.0
7.7High

Official 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.

CVSS scores

ScoreVersionSourceVector
7.7High 4.0 CVEProject cvelistV5 (CNA) (Forescout) 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

Affected products

VendorProductVersionsSource
Forescout Technologies SecureConnector v < 11.3.20 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-10-27
Last updated
2026-11-03
State
Published
Assigner (CNA)
Forescout

Exploit prediction (EPSS)

0.15%
Probability of exploitation in 30 days
4.1%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-295
    Improper Certificate Validation