CVE-2021-1724

Authenticated data disclosure via cross-site scripting

Published Feb 25, 2021 · Updated Aug 3, 2024

Cross-site scripting in Microsoft Dynamics Business Central and Dynamics NAV allows remote authenticated users to disclose data across a trust boundary. Microsoft has not published the affected web-client locus or the input-handling operation that permits script execution. Exploitation requires adjacent-network access, low privileges, and victim interaction; the published impact is limited to confidentiality.

CVSS severity6.1
Medium
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Microsoft Dynamics Business Central and Dynamics NAV allows remote authenticated users to disclose data across a trust boundary. Microsoft has not published the affected web-client locus or the input-handling operation that permits script execution. Exploitation requires adjacent-network access, low privileges, and victim interaction; the published impact is limited to confidentiality.

The record

CVE
CVE-2021-1724
Published
Feb 25, 2021
Updated
Aug 3, 2024
Vendor
Microsoft
Product
Microsoft Dynamics 365 Business Central 2020 Release Wave 2 (On-Premise)
Classifications
CWE-79
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=17.0.0 <publication

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Dynamics 365 Business Central 2020 Release Wave 2 (On-Premise)version=17.0.0 <publication
Microsoft · Microsoft Dynamics NAV 2017version=1.0 <publication
Microsoft · Dynamics 365 Business Central 2019 Release Wave 2 (On-Premise)version=15.0.0 <publication
Microsoft · Microsoft Dynamics NAV 2016version=1.0 <publication
Microsoft · Microsoft Dynamics NAV 2018version=1.0 <publication
Microsoft · Microsoft Dynamics 365 Business Central 2020 Release Wave 1version=16.0.0 <publication
Microsoft · Microsoft Dynamics NAV 2015version=1.0 <publication

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
2.3NIST NVDAV:A/AC:M/Au:S/C:N/I:P/A:N
6.1Microsoft CorporationCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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