How severe is CVE-2020-16875?

High severity. CVSS v3 base score is 8.4 out of 10.

Is CVE-2020-16875 known to be exploited?

17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Exchange Server 2016 Cumulative Update 16

CVE-2020-16875

<p>A remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments.</p> <p>An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the Sys…

EPSS: 0.868 (99.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C.

Affected products

Microsoft Exchange Server 2016 Cumulative Update 16 — versions 15.01.0
Microsoft Exchange Server 2016 Cumulative Update 17 — versions 15.01.0
Microsoft Exchange Server 2019 Cumulative Update 5 — versions 15.02.0
Microsoft Exchange Server 2019 Cumulative Update 6 — versions 15.02.0

Public proof-of-concept exploits

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16875 (x_refsource_MISC)
packetstormsecurity.com/files/159210/Microsoft-Exchange-Server-DlpUtils-AddTena… (x_refsource_MISC)

Frequently asked questions

What is CVE-2020-16875?: CVE-2020-16875 is a high-severity vulnerability in Microsoft Exchange Server 2016 Cumulative Update 16. CVSS score: 8.4/10. Published 2020-09-11.
How severe is CVE-2020-16875?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2020-16875 known to be exploited?: 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.