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CVE-2021-1724

22
FAUCET Score

CVE-2021-1724 is a cross-site scripting (XSS) vulnerability affecting Microsoft Dynamics 365 Business Central and Dynamics NAV. Rated Medium with a CVSS score of 6.1, this vulnerability requires adjacent network access and low privileges, user interaction, and can lead to high confidentiality impact. While not in the KEV catalog and lacking public exploit code in Metasploit, Nuclei, or ExploitDB, it has garnered some community discussion and media coverage, notably being addressed in Microsoft's February 2021 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365_business_central:2019:release_wave_2:*:*:on-premise:*:*:*
2020CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365_business_central:2020:release_wave_1:*:*:*:*:*:*
2020CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365_business_central:2020:release_wave_2:*:*:*:*:*:*
2015CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_nav:2015:*:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_nav:2016:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 98th percentile among its peer group of 60 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2018
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 Business Central 2020 Release Wave 1
View patch
microsoftpatch availablevia msrc
Product: Dynamics 365 Business Central 2019 Release Wave 2 (On-Premise)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2017
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 Business Central 2020 Release Wave 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2015
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2016
View patch

Vendor Advisories (1)

microsoft2021-Feb/CVE-2021-1724Important

Microsoft Dynamics Business Central Cross-site Scripting Vulnerability

Feb 9, 2021

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-1724
PatchVendor Advisory