CVE-2021-40440 json
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
published 2021-09-15 5 y ago modified 2026-08-10 2 mo ago also EUVD-2021-27617
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Patch / fix
- Microsoft Microsoft Dynamics 365 Business Central 2020 Release Wave 2 – Update 17.10 17.0.29460
- Microsoft Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.5 18.0.29486
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Microsoft Microsoft Dynamics 365 Business Central 2020 Release Wave 2 – Update 17.10
- Microsoft Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.5
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2021-40440
vendor-advisory, patch
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-40440
patch, vendor-advisory
Sources
- CVE List CVE-2021-40440
- NVD CVE-2021-40440
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