CVE-2020-6939

Name: CVE-2020-6939
Creator: NVD / NIST
Published: 2020-11-23T17:15:12.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.80%

Last modified Jun 17, 2026

CVE-2020-6939 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Tableau Server installations configured with Site-Specific SAML that allows the APIs to be used by unauthenticated users. If exploited, this could allow a malicious user to configure Site-Specific SAML settings and could lead to account takeover for users of that site. EPSS estimates a 1.80% chance of exploitation in the next 30 days.

Description

Tableau Server installations configured with Site-Specific SAML that allows the APIs to be used by unauthenticated users. If exploited, this could allow a malicious user to configure Site-Specific SAML settings and could lead to account takeover for users of that site. Tableau Server versions affected on both Windows and Linux are: 2018.2 through 2018.2.27, 2018.3 through 2018.3.24, 2019.1 through 2019.1.22, 2019.2 through 2019.2.18, 2019.3 through 2019.3.14, 2019.4 through 2019.4.13, 2020.1 through 2020.1.10, 2020.2 through 2020.2.7, and 2020.3 through 2020.3.2.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.80%

75.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Tableau	Tableau Server	>= 2018.2, <= 2018.2.27
Tableau	Tableau Server	>= 2018.3, <= 2018.3.24
Tableau	Tableau Server	>= 2019.1, <= 2019.1.22
Tableau	Tableau Server	>= 2019.2, <= 2019.2.18
Tableau	Tableau Server	>= 2019.3, <= 2019.3.14
Tableau	Tableau Server	>= 2019.4, <= 2019.4.13
Tableau	Tableau Server	>= 2020.1, <= 2020.1.10
Tableau	Tableau Server	>= 2020.2, <= 2020.2.7
Tableau	Tableau Server	>= 2020.3, <= 2020.3.2

References

https://help.salesforce.com/articleView?id=000355686&type=1&mode=1Third Party Advisory
https://help.salesforce.com/articleView?id=000355686&type=1&mode=1Third Party Advisory

Timeline

Published: Nov 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6939?

How severe is CVE-2020-6939?

CVE-2020-6939 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.80% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6939?

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-2020-6939?

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

Scan your code now

Source: NVD / NIST