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5.4

Microsoft Dynamics Business Central Cross-site Scripting

CVE-2021-40440 · published 5 years ago
Summary

A cross-site scripting (XSS) vulnerability in Microsoft Dynamics Business Central allows attackers to inject malicious code into websites, potentially stealing user data or taking control of user sessions. This affects users of the software who interact with web-based interfaces. Microsoft has likely released a patch to fix this issue, and it's essential to apply the latest updates to ensure security.

What to do
  • Update microsoft microsoft dynamics 365 business central 2020 release wave 2 – update 17.10 to version 17.0.29460 or later.
  • Update microsoft microsoft dynamics 365 business central 2021 release wave 1 - update 18.5 to version 18.0.29486 or later.
Affected software
VendorProductAffected versions
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
microsoft dynamics_365_business_central 2020
2021
cpe:2.3:a:microsoft:dynamics_365_business_central:2020:update_17.10:release_wave_2:*:*:*:*:*
Original advisory text
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published15 Sep 2021
Updated4 Nov 2026
First seen10 Aug 2026
Sources
CVE-2021-40440 · NVD
CVE-2021-40440 · MITRE
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