CVE-2025-13833

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

Published Oct 26, 2026 CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Forescout Technologies
Forescout Technologies secureconnector
Vendors & Products Forescout Technologies
Forescout Technologies secureconnector
Type Values Removed Values 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.
Title Insecure TLS Fingerprint Validation in ForeScout SecureConnector Configuration Enables Remote Code Execution
Weaknesses CWE-295
References
Metrics cvssV4_0

{'score': 7.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Forescout
Published
Updated
Nov 3, 2026, 5:33 PM
Reserved
Dec 1, 2025, 5:04 PM
Status
Deferred
Published
Oct 26, 2026, 9:17 PM
Modified
Nov 3, 2026, 6:17 PM