How severe is CVE-2026-33821?

CVE-2026-33821 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-33821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33821?

CVE-2026-33821 affects Microsoft Dynamics 365 Customer Insights. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33821?

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.

Does CVE-2026-33821 have an EU (EUVD) identifier?

Yes. CVE-2026-33821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29579.

When was CVE-2026-33821 published?

CVE-2026-33821 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-33821

CVE-2026-33821 is a high-severity vulnerability in Microsoft Dynamics 365 Customer Insights with a CVSS 3.x base score of 7.7. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29579
Weakness: CWE-269
Affected product: Microsoft Dynamics 365 Customer Insights
Published: 2026-05-12
Last modified: 2026-06-17

Description

Improper privilege management in Microsoft Dynamics 365 Customer Insights allows an authorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2026-33821?: Improper privilege management in Microsoft Dynamics 365 Customer Insights allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2026-33821?: CVE-2026-33821 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-33821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33821?: CVE-2026-33821 affects Microsoft Dynamics 365 Customer Insights. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33821?: 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.
Does CVE-2026-33821 have an EU (EUVD) identifier?: Yes. CVE-2026-33821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29579.
When was CVE-2026-33821 published?: CVE-2026-33821 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33821

Affected products (1)

cpe:2.3:a:microsoft:dynamics_365_customer_insights:-:*:*:*:*:*:*:*

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