CVE-2011-1889The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execute arbitrary code via vectors involving unspecified request…
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It affects microsoft forefront_threat_management_gateway. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 3, 2022; federal agencies had to remediate by Mar 24, 2022. Treat that date as your deadline.
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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
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119
- Known exploited
- Added to CISA KEV Mar 3, 2022; federal remediation due Mar 24, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 49.02% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft forefront_threat_management_gateway microsoft:forefront_threat_management_gateway | 2010 | NVD |
References
- http://www.securitytracker.com/id?1025637vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-040vendor-advisory, x-refsource-ms, patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67736vdb-entry, x-refsource-xf, third-party-advisory
- http://www.securityfocus.com/bid/48181vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- http://secunia.com/advisories/44857third-party-advisory, x-refsource-secunia, broken-link
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12642vdb-entry, signature, x-refsource-oval, broken-link
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-1889us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.