CVE-2021-36924

Name: CVE-2021-36924
Creator: NVD / NIST
Published: 2021-11-02T13:15:07.763+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2021-36924 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows local low-privileged users to achieve a pool overflow (leading to Escalation of Privileges, Denial of Service, and Code Execution) via a crafted Device IO Control packet to a device.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows local low-privileged users to achieve a pool overflow (leading to Escalation of Privileges, Denial of Service, and Code Execution) via a crafted Device IO Control packet to a device.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.20%

10.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-367

Affected Software

Vendor	Product	Versions
Realtek	Rtsupx Usb Utility Driver	<= 1.14.0.0

References

https://www.realtek.com/images/safe-report/Realtek_RtsUpx_Security_Advisory_Report.pdfVendor Advisory
https://www.sentinelone.com/resources/category/report/Not Applicable
https://www.realtek.com/images/safe-report/Realtek_RtsUpx_Security_Advisory_Report.pdfVendor Advisory
https://www.sentinelone.com/resources/category/report/Not Applicable

Timeline

Published: Nov 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36924?

How severe is CVE-2021-36924?

CVE-2021-36924 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36924?

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-2021-36924?

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

Scan your code now

Source: NVD / NIST