HOMEVULNERABILITIESCVE-2020-12431
MEDIUM

CVE-2020-12431

CWE-732Published: May 21, 2020· Updated: Jun 17, 2026

6.6
CVSS v3.1

Official 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).

NVD Source

Technical Analysis

CVE-2020-12431 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.6.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H

Affected Vendors & Products

splashtop2 product(s)
software updaterstreamer
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://improsec.com/tech-blog/privilege-escalation-vulnerability-in-splashtop-streamer
ADVISORYhttps://support-splashtopbusiness.splashtop.com/hc/en-us/articles/360042648231-Splashtop-Streamer-version-3-3-8-0-for-Windows-released-includes-SOS-version-3-3-8-0
ADVISORYhttps://improsec.com/tech-blog/privilege-escalation-vulnerability-in-splashtop-streamer
ADVISORYhttps://support-splashtopbusiness.splashtop.com/hc/en-us/articles/360042648231-Splashtop-Streamer-version-3-3-8-0-for-Windows-released-includes-SOS-version-3-3-8-0

All References (4)

→
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

Quick Facts

CVE IDCVE-2020-12431
CVSS Score6.6 / 10
SeverityMEDIUM
WeaknessCWE-732
CISA KEVNo
Affected1 vendor(s)
PublishedMay 21, 2020

Related CVEs (CWE-732)

CVE-2025-12004
10.0
CVE-2026-9508
10.0
CVE-2014-125121
10.0
CVE-2021-33509
9.9
CVE-2025-49131
9.9
CVE-2026-32048
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-12431 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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