📋 漏洞基础信息

⚔️ 原始 PoC

https://gitlab.com/nu11secur1ty/0/-/raw/main/README.md?ref_type=heads

## Description:
A race condition exists between Windows Defender's
`MpCleanCallbackFunction` (cleanup routine) and Volume Shadow Copy
creation. Successful exploitation results in:

1. LPE (Local Privilege Escalation) to NT AUTHORITY\SYSTEM via
`CreateProcessAsUser`
2. Use-after-free condition causing Windows Defender (`MsMpEng.exe`) to
crash
3. System remains without antivirus protection for the session

The exploit uses:
- Fake ISO mount via `OpenVirtualDisk` / `AttachVirtualDisk`
- Real-time priority escalation (`REALTIME_PRIORITY_CLASS` +
`THREAD_PRIORITY_TIME_CRITICAL`)
- Speed racing against Defender's cleanup routine

**STATUS: HIGH - Critical (0-Day / LPE)**

Exploit:
[url](https://gitlab.com/nu11secur1ty/0.git)

Demo:
[url](https://www.patreon.com/nu11secur1ty/posts/honda-exploit-160798929)

Time spent:
9:10:00

--
System Administrator - Infrastructure Engineer
Penetration Testing Engineer
Exploit developer at https://packetstormsecurity.com/
https://cve.mitre.org/index.html
https://cxsecurity.com/ and https://www.exploit-db.com/
home page: https://www.asc3t1c-nu11secur1ty.com/
hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E=
nu11secur1ty https://www.asc3t1c-nu11secur1ty.com/
-- 

System Administrator - Infrastructure Engineer
Penetration Testing Engineer
Exploit developer at https://packetstorm.news/
https://cve.mitre.org/index.html
https://cxsecurity.com/ and https://www.exploit-db.com/
0day Exploit DataBase https://0day.today/
home page: https://www.asc3t1c-nu11secur1ty.com/
hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E=
                          nu11secur1ty <http://nu11secur1ty.com/>

🔬 深度技术分析

<<SCRIPT_LANG>>

PowerShell

<<SCRIPT>>

<#

.SYNOPSIS

Windows Defender (MsMpEng.exe) Race Condition - Environment Verification / Crash Detection

.DESCRIPTION

这是一个“防御性检测/验证脚本”，不是漏洞利用代码。

它不会挂载虚拟磁盘、不会设置实时优先级、不会触发 Defender

cleanup callback 竞态，也不会尝试任何本地提权。

该脚本仅用于验证目标环境是否出现公开报告中的“信号”：

1) MsMpEng.exe 是否存在/正在运行

2) Windows Defender 实时保护状态

3) MsMpEng.exe 最近是否发生过崩溃 (Event ID 1000)

4) VSS 服务状态

5) 当前进程是否具有管理员权限

用法：

powershell.exe -ExecutionPolicy Bypass -File MsMpEng_Race_Check.ps1

.NOTES

作者：安全研究员（防御方向）

日期：2026-06-11

说明：该公开漏洞报告没有分配 CVE，且公开资料未提供完整可复现步骤，

因此本脚本只做环境检测/崩溃监测，不作为 Exp 使用。

#>

$ErrorActionPreference = 'Continue'

function Write-Info {

param(

[string]$Name,

[object]$Value

)

"[*] {0,-34}: {1}" -f $Name, $Value

}

Write-Info "脚本开始" (Get-Date -Format "yyyy-MM-dd HH:mm:ss")

Write-Info "当前用户" ([Security.Principal.WindowsIdentity]::GetCurrent().Name)

1. 当前进程权限检查

$currentIdentity = [Security.Principal.WindowsIdentity]::GetCurrent()

$principal = New-Object Security.Principal.WindowsPrincipal($currentIdentity)

$isAdmin = $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

Write-Info "IsAdministrator" $isAdmin

2. 检查 MsMpEng.exe 进程

$mp = Get-Process -Name "MsMpEng" -ErrorAction SilentlyContinue

if ($mp) {

Write-Info "MsMpEng PID" $mp.Id

Write-Info "MsMpEng 路径" $mp.Path

Write-Info "MsMpEng 响应状态" $mp.Responding

} else {

Write-Info "MsMpEng 进程" "未发现/未运行"

}

3. 检查 Windows Defender 服务

try {

$svc = Get-Service -Name "WinDefend" -ErrorAction Stop

Write-Info "WinDefend 服务状态" $svc.Status

}

catch {

Write-Info "WinDefend 服务状态" "获取失败: $($_.Exception.Message)"

}

4. 检查 Defender 实时保护状态

try {

$mpStatus = Get-MpComputerStatus -ErrorAction Stop

Write-Info "RealTimeProtectionEnabled" $mpStatus.RealTimeProtectionEnabled

Write-Info "AntivirusEnabled" $mpStatus.AntivirusEnabled

}

catch {

Write-Info "Defender 状态" "不可用/已被其他安全软件接管: $($_.Exception.Message)"

}

5. 检查 MsMpEng.exe 最近 7 天崩溃事件 (Application Error / Event ID 1000)

$since = (Get-Date).AddDays(-7)

try {

$crashEvents = @(

Get-WinEvent -FilterHashtable @{

LogName = 'Application'

Id = 1000

StartTime = $since

} -ErrorAction SilentlyContinue |

Where-Object { $_.Message -like '*MsMpEng.exe*' }

)

Write-Info "MsMpEng 崩溃事件数(7天)" $crashEvents.Count

$crashEvents | Select-Object -First 5 TimeCreated, Id, ProviderName, Message |

Format-List

}

catch {

Write-Info "崩溃事件查询" "无权限或日志不存在: $($_.Exception.Message)"

}

6. 检查 VSS 服务

try {

$vss = Get-Service -Name "VSS" -ErrorAction SilentlyContinue

if ($vss) {

Write-Info "VSS 服务状态" $vss.Status

} else {

Write-Info "VSS 服务状态" "未安装/不存在"

}

}

catch {

Write-Info "VSS 服务状态" "获取失败: $($_.Exception.Message)"

}

7. 系统启动时间 / 在线时长

try {

$os = Get-CimInstance -ClassName Win32_OperatingSystem -ErrorAction Stop

$uptime = (Get-Date) - $os.LastBootUpTime

Write-Info "最近启动时间" $os.LastBootUpTime

Write-Info "系统运行时长(小时)" ([math]::Round($uptime.TotalHours, 2))

}

catch {

Write-Info "系统启动时间" "获取失败: $($_.Exception.Message)"

}

Write-Info "脚本结束" (Get-Date -Format "yyyy-MM-dd HH:mm:ss")

<#

🛡️ 修复建议

请升级到厂商最新安全版本。

📎 参考链接

• Exploit-DB 原文

🚨 威胁评估

⚠️ 本文基于公开漏洞数据库，仅供安全研究与防御参考。生成时间: 2026-08-03 08:30 | 来源: Exploit-DB