CVE-2020-12431

Name: CVE-2020-12431
Creator: NVD / NIST
Published: 2020-05-21T17:15:10.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2020-12431 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. A Windows privilege change issue was discovered in Splashtop Software Updater before 1.5.6.16. Insecure permissions on the configuration file and named pipe allow for local privilege escalation to NT AUTHORITY/SYSTEM, by forcing a permission change to any Splashtop files and directories, with resultant DLL hijacking. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

A Windows privilege change issue was discovered in Splashtop Software Updater before 1.5.6.16. Insecure permissions on the configuration file and named pipe allow for local privilege escalation to NT AUTHORITY/SYSTEM, by forcing a permission change to any Splashtop files and directories, with resultant DLL hijacking. This product is bundled with Splashtop Streamer (before 3.3.8.0) and Splashtop Business (before 3.3.8.0).

Metrics

CVSS 3.1

6.6/10

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

EPSS Probability

0.55%

41.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Splashtop	Software Updater	< 1.5.6.16
Splashtop	Streamer	< 3.3.8.0

References

https://improsec.com/tech-blog/privilege-escalation-vulnerability-in-splashtop-streamerExploit, Third Party Advisory
https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/360042648231-Splashtop-Streamer-version-3-3-8-0-for-Windows-released-includes-SOS-version-3-3-8-0Release Notes, Vendor Advisory
https://improsec.com/tech-blog/privilege-escalation-vulnerability-in-splashtop-streamerExploit, Third Party Advisory
https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/360042648231-Splashtop-Streamer-version-3-3-8-0-for-Windows-released-includes-SOS-version-3-3-8-0Release Notes, Vendor Advisory

Timeline

Published: May 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12431?

How severe is CVE-2020-12431?

CVE-2020-12431 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12431?

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-2020-12431?

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

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Source: NVD / NIST