CVE-2011-1889Actively exploitedAdded to KEV 2022-03-03

Microsoft Forefront TMG Remote Code Execution Vulnerability

Microsoft, Forefront Threat Management Gateway (TMG)

Description

A remote code execution vulnerability exists in the Forefront Threat Management Gateway (TMG) Firewall Client Winsock provider that could allow code execution in the security context of the client application.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

High

49.0%

estimated chance of real-world exploitation in the next 30 days, higher than 98.9% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-03-24

CWE-119

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