CVE-2021-43892 json
Microsoft BizTalk ESB Toolkit Spoofing Vulnerability
published 2021-12-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30754
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
Microsoft BizTalk ESB Toolkit Spoofing Vulnerability
Patch / fix
- Microsoft Microsoft BizTalk ESB Toolkit 2.2 2.2
- Microsoft Microsoft BizTalk ESB Toolkit 2.3 2.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
3.02% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C |
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Microsoft Microsoft BizTalk ESB Toolkit 2.2
- Microsoft Microsoft BizTalk ESB Toolkit 2.4
- Microsoft Microsoft BizTalk ESB Toolkit 2.3
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-43892
patch, vendor-advisory
Sources
- CVE List CVE-2021-43892
- NVD CVE-2021-43892
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