PT-2021-4795 · Microsoft · Windows Fast Fat File System Driver+1

Yhzx_2013 + 1 · Published 2021-11-09 · Updated 2023-12-28 · CVE-2021-41377

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Fast FAT File System Driver (affected versions not specified)

Description The issue is related to insufficient access restrictions in the Windows Fast FAT File System Driver, which can be exploited to bypass security restrictions and elevate privileges. This allows an attacker to affect the system.

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:2021-05517

CVE-2021-41377

Affected Products

Windows

Windows Fast Fat File System Driver

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2021-41377 · Security Note
• https://osv.dev/vulnerability/CVE-2021-41377 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05517 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41377 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-41377 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41377 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41377 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021110934 · Note
• https://t.me/cvenotify/23216 · Telegram Post