What is CVE-2021-42563?

CVE-2021-42563 is a high-severity vulnerability in Microsoft Windows, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2021-11-12.

How severe is CVE-2021-42563?

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

Vulnerability in Microsoft Windows

CVE-2021-42563

There is an Unquoted Service Path in NI Service Locator (nisvcloc.exe) in versions prior to 18.0 on Windows. This may allow an authorized local user to insert arbitrary code into the unquoted service path and escalate privileges.

EPSS: 0.002 (13.5th 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

Microsoft Windows
Ni Ni_service_locator
N/a — versions n/a

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-42563?: CVE-2021-42563 is a high-severity vulnerability in Microsoft Windows, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2021-11-12.
How severe is CVE-2021-42563?: High severity. CVSS v3 base score is 7.8 out of 10.