What is CVE-2020-16943?

An elevation of privilege vulnerability exists in Microsoft Dynamics 365 Commerce. An unauthenticated attacker who successfully exploited this vulnerability could update data without proper authorization. To exploit the vulnerability, an attacker would need to send a specially crafted request to an affected server. The security update addresses the vulnerability by correcting how Microsoft Dynamics 365 Commerce performs authorization checks.

How severe is CVE-2020-16943?

CVE-2020-16943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-16943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16943?

CVE-2020-16943 affects Microsoft Dynamics 365. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-16943?

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

When was CVE-2020-16943 published?

CVE-2020-16943 was published on 2020-10-16 and last updated on 2026-06-17.

CVE-2020-16943

CVE-2020-16943 is a medium-severity vulnerability in Microsoft Dynamics 365 with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Dynamics 365
Published: 2020-10-16
Last modified: 2026-06-17

Description

An elevation of privilege vulnerability exists in Microsoft Dynamics 365 Commerce. An unauthenticated attacker who successfully exploited this vulnerability could update data without proper authorization. To exploit the vulnerability, an attacker would need to send a specially crafted request to an affected server. The security update addresses the vulnerability by correcting how Microsoft Dynamics 365 Commerce performs authorization checks.

Frequently asked questions

What is CVE-2020-16943?: An elevation of privilege vulnerability exists in Microsoft Dynamics 365 Commerce. An unauthenticated attacker who successfully exploited this vulnerability could update data without proper authorization. To exploit the vulnerability, an attacker would need to send a specially crafted request to an affected server. The security update addresses the vulnerability by correcting how Microsoft Dynamics 365 Commerce performs authorization checks.
How severe is CVE-2020-16943?: CVE-2020-16943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-16943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16943?: CVE-2020-16943 affects Microsoft Dynamics 365. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-16943?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-16943 published?: CVE-2020-16943 was published on 2020-10-16 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16943

Affected products (1)

cpe:2.3:a:microsoft:dynamics_365:-:*:*:*:commerce:*:*:*

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