PT-2021-4398 · Microsoft · Windows Nearby Sharing+1

Caleb Helbling · Published 2021-10-12 · Updated 2023-08-01 · CVE-2021-40464

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Nearby Sharing (affected versions not specified)

Description The issue is related to errors in privilege management in the Windows Nearby Sharing function. It allows a remote attacker to elevate their privileges. There is no information provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Improper Privilege Management

Weakness Enumeration

CWE-264

CWE-269

Related Identifiers

BDU:2021-05028

CVE-2021-40464

Affected Products

Windows

Windows Nearby Sharing

References · 8

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40464 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-40464 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40464 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05028 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40464 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-40464 · Vendor Advisory
• http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40464 · Note
• https://t.me/cibsecurity/30477 · Telegram Post