How severe is CVE-2021-34474?

CVE-2021-34474 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34474 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34474?

CVE-2021-34474 primarily affects Microsoft Dynamics 365 Business Central. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-34474?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-34474 published?

CVE-2021-34474 was published on 2021-07-14 and last updated on 2026-06-17.

CVE-2021-34474

CVE-2021-34474 is a high-severity vulnerability in Microsoft Dynamics 365 Business Central with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v2: 6.5
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Dynamics 365 Business Central
Published: 2021-07-14
Last modified: 2026-06-17

Description

Dynamics Business Central Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2021-34474?: Dynamics Business Central Remote Code Execution Vulnerability
How severe is CVE-2021-34474?: CVE-2021-34474 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34474 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34474?: CVE-2021-34474 primarily affects Microsoft Dynamics 365 Business Central. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-34474?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-34474 published?: CVE-2021-34474 was published on 2021-07-14 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34474

Affected products (3)

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_365_business_central:2021:release_wave_1:*:*:*:*:*:*

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