How severe is CVE-2011-1889?

CVE-2011-1889 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 49.0% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2011-1889: Microsoft Forefront TMG Remote Code Execution

CISA Known Exploited Vulnerabilities

Microsoft Forefront TMG Remote Code Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-03-03

Remediation due

2022-03-24

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2011-1889

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."

Severity

CVSS 3.1 · CISA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

6 Links

Vendor advisories

MS11-040

Third-party advisories

44857

Vulnerability databases

Record Details

Published

2011-06-16

Last updated

2025-10-22

Assigner (CNA)

microsoft

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.