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CVE-2021-36946

19
FAUCET Score

CVE-2021-36946 is a Cross-site Scripting (XSS) vulnerability affecting Microsoft Dynamics 365 Business Central and Dynamics NAV. Rated Medium with a CVSS score of 5.4, this vulnerability requires user interaction and low privileges, allowing an attacker to inject malicious scripts that could lead to limited confidentiality and integrity impacts. While the vulnerability has a low EPSS score and is not listed in CISA's KEV catalog, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), and community discussion is minimal, suggesting it is not currently under active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365_business_central:2019:spring_update:*:*:*:*:*:*
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:*:*:*:*:*:*
2017CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_nav:2017:*:*:*:*:*:*:*
2018CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_nav:2018:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 91st percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

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

Remediation

Patch Available

Vendor Patches (6)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2017Fixed in: 30601
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics NAV 2018Fixed in: 47562
View patch
microsoftpatch availablevia msrc
Product: Dynamics 365 Business Central 2019 Spring UpdateFixed in: Application Build 14.27.47563, Platform Build 14.0
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 Business Central 2020 Release Wave 2 - Update 17.9Fixed in: Application Build 17.9.28504, Platform Build 17.0.
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 Business Central 2020 Release Wave 1 - Update 16.15Fixed in: Application Build 16.15.28500, Platform Build 16.0
View patch

Vendor Advisories (1)

microsoft2021-Aug/CVE-2021-36946Important

Microsoft Dynamics Business Central Cross-site Scripting Vulnerability

Aug 10, 2021

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-36946
PatchVendor Advisory