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TI-2021-19680 Aliases CVE-2021-43892GHSA-4hpv-f46m-r2m2

Microsoft BizTalk ESB Toolkit Spoofing Vulnerability

Priority LOW 38Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Microsoft BizTalk ESB Toolkit Spoofing Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03017 87th percentileScored 2026-11-07
Fix Fixed Microsoft BizTalk ESB Toolkit 2.2 (Microsoft): 2.2Microsoft BizTalk ESB Toolkit 2.4 (Microsoft): 2.4+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft BizTalk ESB Toolkit 2.22.0 to before 2.22.2Patch availableCNA
MicrosoftMicrosoft BizTalk ESB Toolkit 2.42.4 to before 2.42.4Patch availableCNA
MicrosoftMicrosoft BizTalk ESB Toolkit 2.32.0 to before 2.32.3Patch availableCNA
  • Microsoft BizTalk ESB Toolkit 2.2 VendorMicrosoft Affected 2.0 to before 2.2 Fixed in 2.2 Patch available CNA
  • Microsoft BizTalk ESB Toolkit 2.4 VendorMicrosoft Affected 2.4 to before 2.4 Fixed in 2.4 Patch available CNA
  • Microsoft BizTalk ESB Toolkit 2.3 VendorMicrosoft Affected 2.0 to before 2.3 Fixed in 2.3 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.2:*:*:*:*:*:*:*2.2VulnerableMicrosoft
cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.3:*:*:*:*:*:*:*2.3VulnerableMicrosoft
cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.4:*:*:*:*:*:*:*2.4VulnerableMicrosoft
  • cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:biztalk_esb_toolkit:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft BizTalk ESB Toolkit 2.2 (Microsoft) Fixed in 2.2
  • Fix · CNA Microsoft BizTalk ESB Toolkit 2.4 (Microsoft) Fixed in 2.4
  • Fix · CNA Microsoft BizTalk ESB Toolkit 2.3 (Microsoft) Fixed in 2.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43892
  2. 2026-10-03 Alias added: GHSA-4hpv-f46m-r2m2

References

Patch 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences