CVE-2020-10146

Name: CVE-2020-10146
Creator: NVD / NIST
Published: 2020-12-09T01:15:12.283+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.89%

Last modified Jun 17, 2026

CVE-2020-10146 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication tokens and to possibly execute arbitrary commands. This vulnerability was fixed for all Teams users in the online service on or around October 2020.. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication tokens and to possibly execute arbitrary commands. This vulnerability was fixed for all Teams users in the online service on or around October 2020.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.89%

77.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Microsoft	Teams	< 2020-10-29

References

https://github.com/oskarsve/ms-teams-rceExploit, Third Party Advisory
https://github.com/oskarsve/ms-teams-rceExploit, Third Party Advisory

Timeline

Published: Dec 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10146?

How severe is CVE-2020-10146?

CVE-2020-10146 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10146?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10146?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST