Is CVE-2011-1889 actively exploited?

Yes. CVE-2011-1889 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2011-1889 be exploited remotely?

The attack vector of CVE-2011-1889 has not been classified yet.

What is the CVSS score of CVE-2011-1889?

CVE-2011-1889 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2011-1889

HIGHCISA KEVIN THE WILD

CVE-2011-1889

Published: March 3, 2022

EPSS:85.35%probability of exploitation in 30 daysPercentile:99.3th

Official 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.

NVD Source

CISA KEV Advisory

Microsoft Forefront TMG Remote Code Execution Vulnerability

Added to KEV: 2022-03-03Federal patch deadline: 2022-03-24

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

A remote code execution vulnerability exists in the Forefront Threat Management Gateway (TMG) Firewall Client Winsock provider. This flaw could allow code execution in the security context of the client application, and its high EPSS score of 0.85353 indicates a significant likelihood of exploitation.

This vulnerability is actively exploited in the wild and is included in CISA's KEV catalog. The remote code execution capability makes it a severe threat.

Recommended Action

Organizations using Forefront Threat Management Gateway (TMG) Firewall Client should apply all available security updates. Ensure client applications are updated and network security policies restrict untrusted connections.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2011-1889 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2011-1889 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.