PT-2021-3055 · Microsoft · Windows Hyper-V+1

Australeo + 6 · Published 2021-05-11 · Updated 2025-01-12 · CVE-2021-28476

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

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

Description The issue is related to incorrect code generation management in the Hyper-V component of the Windows operating system. It allows a remote attacker to execute arbitrary code. The problem can be exploited for remote code execution or to cause a denial-of-service state. The vulnerability affects the Hyper-V virtual network switch driver (vmswitch.sys).

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

Exploit

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

BDU:2021-02661

CVE-2021-28476

Affected Products

Windows

Windows Hyper-V

References · 23

• 🔥 https://github.com/0vercl0k/CVE-2021-28476 · Exploit
• 🔥 https://github.com/bluefrostsecurity/CVE-2021-28476 · Exploit
• 🔥 https://github.com/australeo/CVE-2021-28476 · Exploit
• 🔥❌ https://github.com/sh4m2hwz/CVE-2021-28476-tools-env · Exploit, Deleted
• https://bdu.fstec.ru/vul/2021-02661 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28476 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28476 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28476 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28476 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-28476 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-28476 · Vendor Advisory
• https://github.com/SB-GC-Labs/hAFL1 · Note
• https://t.me/hybgl/917 · Telegram Post
• https://twitter.com/fwmzyw/status/1878372785967313262 · Twitter Post
• https://t.me/defcon_news/81051 · Telegram Post