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PatchSiren cyber security CVE debrief

CVE-2011-1889 Microsoft CVE debrief

CVE-2011-1889 is a Microsoft Forefront Threat Management Gateway (TMG) remote code execution vulnerability that CISA has placed in its Known Exploited Vulnerabilities catalog. That KEV designation means CISA has identified it as actively exploited and expects organizations to remediate it promptly using vendor guidance.

Vendor
Microsoft
Product
Forefront Threat Management Gateway (TMG)
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Organizations that still operate Microsoft Forefront Threat Management Gateway (TMG), along with security teams responsible for internet-facing Microsoft edge services and KEV-driven remediation tracking.

Technical summary

The available official sources identify the issue as a remote code execution vulnerability in Microsoft Forefront Threat Management Gateway (TMG). CISA's KEV entry marks it as known exploited and directs defenders to apply updates per vendor instructions. No further technical specifics are provided in the supplied source corpus.

Defensive priority

High. CISA has listed this CVE in KEV, which is a strong signal to prioritize remediation and verify exposure without delay.

Recommended defensive actions

  • Apply updates per vendor instructions.
  • Confirm whether Microsoft Forefront Threat Management Gateway (TMG) is present in your environment.
  • Prioritize remediation work for this CVE using your KEV response process.
  • Track remediation against the CISA KEV due date of 2022-03-24.
  • Use the official CVE and NVD records to validate status and any additional vendor guidance.

Evidence notes

Source evidence is limited to official records and the CISA KEV entry. The KEV metadata identifies the vulnerability as Microsoft Forefront TMG Remote Code Execution Vulnerability, lists dateAdded as 2022-03-03, dueDate as 2022-03-24, and states the required action is to apply updates per vendor instructions. The supplied NVD note also points to the CVE detail page.

Sources and references

Verified primary and authoritative sources

  • CVE-2011-1889 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2011-1889

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2011-1889 NVD vulnerability detail

    Publisher, destination, and source semantics verified

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

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.