How severe is CVE-2021-1724?

CVE-2021-1724 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-1724 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1724?

CVE-2021-1724 primarily affects Microsoft Dynamics 365 Business Central. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-1724?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-1724 published?

CVE-2021-1724 was published on 2021-02-25 and last updated on 2026-06-17.

CVE-2021-1724

CVE-2021-1724 is a medium-severity vulnerability in Microsoft Dynamics 365 Business Central with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 2.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Dynamics 365 Business Central
Published: 2021-02-25
Last modified: 2026-06-17

Description

Microsoft Dynamics Business Central Cross-site Scripting Vulnerability

Frequently asked questions

What is CVE-2021-1724?: Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
How severe is CVE-2021-1724?: CVE-2021-1724 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-1724 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1724?: CVE-2021-1724 primarily affects Microsoft Dynamics 365 Business Central. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-1724?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1724 published?: CVE-2021-1724 was published on 2021-02-25 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1724

Affected products (7)

cpe:2.3:a:microsoft:dynamics_365_business_central:2019:release_wave_2:*:*:on-premise:*:*:*
cpe:2.3:a:microsoft:dynamics_365_business_central:2020:release_wave_1:*:*:*:*:*:*
cpe:2.3:a:microsoft:dynamics_365_business_central:2020:release_wave_2:*:*:*:*:*:*
cpe:2.3:a:microsoft:dynamics_nav:2015:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:dynamics_nav:2016:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:dynamics_nav:2017:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:dynamics_nav:2018:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Dynamics 365 Business Central

CVE-2024-38225 — High (CVSS 8.8): Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability
CVE-2024-35249 — High (CVSS 8.8): Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability
CVE-2022-41127 — High (CVSS 8.5): Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability
CVE-2024-43460 — High (CVSS 8.1): Improper authorization in Dynamics 365 Business Central resulted in a vulnerability that allows an authenticated…
CVE-2024-21380 — High (CVSS 8.0): Microsoft Dynamics Business Central/NAV Information Disclosure Vulnerability
CVE-2021-34474 — High (CVSS 8.0): Dynamics Business Central Remote Code Execution Vulnerability

All CVEs affecting Microsoft Dynamics 365 Business Central →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →