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CVE-2011-1889

Status: AnalyzedCritical (9.8)⚠ Active exploitation

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

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

CISA KEV — actively exploited

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vector AV:N/PR:N sin interacción indica exposición remota directa (T1190). Corrupción de memoria en NSPLookupServiceNext permite ejecución arbitraria de código (T1059), confirmado por CVSS crítico e historial de uso activo.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Affected technologies (1)

Microsoft — Forefront Threat Management Gateway

CWEs

References

Raw JSON (NVD)

Show
{
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    },
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      "value": "La función NSPLookupServiceNext en el cliente de Microsoft Forefront Threat Management Gateway (TMG) 2010 permite a atacantes remotos ejecutar código de su elección a través de vectores que implican peticiones no especificadas, también conocido como \"Vulnerabilidad de corrupción de memoria en el cliente de Firewall TMG.\""
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  "lastModified": "2026-06-16T23:30:18.967",
  "cisaActionDue": "2022-03-24",
  "cisaExploitAdd": "2022-03-03",
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}