Is CVE-2011-1889 actively exploited?

CVE-2011-1889 has no public evidence of in-the-wild exploitation as of 2025-10-22.

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

CVE-2011-1889 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2011-1889?

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2011-1889.

Which products are affected by CVE-2011-1889?

1 product: microsoft forefront threat management gateway.

Fix CVE-2011-1889 - CRITICAL

Description

The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execute arbitrary code via vectors involving unspecified requests, aka "TMG Firewall Client Memory Corruption Vulnerability."

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-119 · Memory Buffer Errors CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: MICROSOFT
Published: 6/16/2011
Last Modified: 10/22/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2011-1889

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary