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Vulnerability record · CVE-2022-47631 · published 14 September 2023

CVE-2022-47631: Razer synapse toctou race condition vulnerability

RRazer · Synapse

Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management. Attackers can place DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if it detects malicious DLLs in this directory, attackers can exploit a race condition and replace a valid DLL (i.e., a copy of a legitimate Razer DLL) with a malicious DLL after the service has already checked the file. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.

7.8 CVSS 3.1 High EPSS 0.39% · top 69.0% CWE-367 · TOCTOU race condition
7.8CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management. Attackers can place DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if it detects malicious DLLs in this directory, attackers can exploit a race condition and replace a valid DLL (i.e., a copy of a legitimate Razer DLL) with a malicious DLL after the service has already checked the file. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2023/Sep/6 ExploitMailing ListThird Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt ExploitThird Party Advisory
http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2023/Sep/6 ExploitMailing ListThird Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-47631), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.