PT-2021-6027 · Microsoft · Windows

Laurent Gaffie · CVE-2021-34476 · Published 2021-07-13 · Updated 2023-12-28

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

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

Description The issue is related to insufficient input validation in the bowser.sys driver of the Windows operating system. This can be exploited by a remote attacker to cause a denial of service.

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

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2022-00601

CVE-2021-34476

Affected Products

Windows

References · 7

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34476 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34476 · Security Note
• https://bdu.fstec.ru/vul/2022-00601 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34476 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34476 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-34476 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2021071378 · Note