CVE-2021-40440
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
- Record
CVE-2021-40440- CVSS 3.1
- 5.4 Medium
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 - Updated
- 2026-11-02
EUVDEUVD-2021-27617
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
- Record
EUVD-2021-27617- CVSS 3.1
- 5.4 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7hv9-m3f4-mcw5
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
- Record
GHSA-7hv9-m3f4-mcw5- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
- Record
CVE-2021-40440- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40440 is a medium vulnerability (CVSS 5.4) in Microsoft Dynamics 365 Business Central, published September 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.06%, the 64th percentile. No source names a fixed version.