Vulnerability in Microsoft Windows
CVE-2022-47631
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.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt (Exploit, Third Party Advisory)
- seclists.org/fulldisclosure/2023/Sep/6 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-47631?
- CVE-2022-47631 is a high-severity vulnerability in Microsoft Windows, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.8/10. Published 2023-09-14.
- How severe is CVE-2022-47631?
- High severity. CVSS v3 base score is 7.8 out of 10.