What is CVE-2021-47880?

CVE-2021-47880 is a high-severity vulnerability in Realtek Semiconductor Corp. Wireless Lan Utility, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-21.

How severe is CVE-2021-47880?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Realtek Semiconductor Corp. Wireless Lan Utility

CVE-2021-47880

Realtek Wireless LAN Utility 700.1631 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted service path by inserting malicious code in the system root path that would execute during application startup or system reboot.

EPSS: 0.001 (2.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Realtek Semiconductor Corp. Wireless Lan Utility — versions 700.1631

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47880?: CVE-2021-47880 is a high-severity vulnerability in Realtek Semiconductor Corp. Wireless Lan Utility, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-21.
How severe is CVE-2021-47880?: High severity. CVSS v3 base score is 7.8 out of 10.