What is CVE-2021-23175?

CVE-2021-23175 is a high-severity vulnerability in Microsoft Windows, classified under Incorrect Authorization. CVSS score: 8.2/10. Published 2021-12-23.

How severe is CVE-2021-23175?

High severity. CVSS v3 base score is 8.2 out of 10.

Auth bypass in Microsoft Windows

CVE-2021-23175

NVIDIA GeForce Experience contains a vulnerability in user authorization, where GameStream does not correctly apply individual user access controls for users on the same device, which, with user intervention, may lead to escalation of privileges, information disclosure, data tampering, and denial of service, affecting other resources beyond the intended security authority of GameStream.

Vulnerability class: Broken Access Control

Published 2021-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (36.9th percentile), scored 2026-10-21.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% 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

Microsoft Windows
NVIDIA Geforce Experience
NVIDIA Geforce Experience Software — versions All versions prior to 3.24.0.126

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

nvidia.custhelp.com/app/answers/detail/a_id/5295 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-23175?: CVE-2021-23175 is a high-severity vulnerability in Microsoft Windows, classified under Incorrect Authorization. CVSS score: 8.2/10. Published 2021-12-23.
How severe is CVE-2021-23175?: High severity. CVSS v3 base score is 8.2 out of 10.