Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2011-1889

CVE-2011-1889CRITICAL

n/a n/a — Microsoft Forefront Threat Management Gateway (TMG)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .4902   98.9   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  May 4   Reserved by microsoft
  Jun 16  Published (CNA: microsoft)
  Mar 3   Added to CISA KEV, remediation due 2022-03-24

CWE-119 · CNA: microsoft · CVSS v3.1 · 7 references · KEV due March 24, 2022

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."

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 4, 2011	Reserved	Reserved by microsoft
June 16, 2011	Published	Published (CNA: microsoft)
March 3, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-03-24

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-119

References (7)

http://secunia.com/advisories/44857 [third-party-advisory, x_refsource_SECUNIA]
http://www.securityfocus.com/bid/48181 [vdb-entry, x_refsource_BID]
http://www.securitytracker.com/id?1025637 [vdb-entry, x_refsource_SECTRACK]
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-040 [vendor-advisory, x_refsource_MS]
https://exchange.xforce.ibmcloud.com/vulnerabilities/67736 [vdb-entry, x_refsource_XF]
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12642 [vdb-entry, signature, x_refsource_OVAL]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-1889 [government-resource]

Authoritative record: CVE-2011-1889 at cve.org

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2011-1889 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.