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CVE-2011-1889

CISA KEV

Published March 3, 2022 · Updated April 3, 2026

high
Official Description+

A remote code execution vulnerability exists in the Forefront Threat Management Gateway (TMG) Firewall Client Winsock provider that could allow code execution in the security context of the client application.

Affected Products

VendorProduct
MicrosoftForefront Threat Management Gateway (TMG)

Patch Status

Patch by 2022-03-24

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2011-1889.