CVE-2024-20671

MEDIUM

Microsoft Defender < - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2024-20671. PoCs published by ig-labs.

AI-analyzed exploit summary This repository contains a functional proof-of-concept exploit for CVE-2024-20671, demonstrating a denial-of-service (DoS) vulnerability in Windows EDR agents by registering an ALPC port before the EDR initializes, causing the EDR to crash on startup.

Description

Microsoft Defender Security Feature Bypass Vulnerability

Exploits (1)

github WORKING POC 33 stars
by ig-labs · c++poc
https://github.com/ig-labs/EDR-ALPC-Block-POC

This repository contains a functional proof-of-concept exploit for CVE-2024-20671, demonstrating a denial-of-service (DoS) vulnerability in Windows EDR agents by registering an ALPC port before the EDR initializes, causing the EDR to crash on startup.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Windows EDR agents (e.g., Palo Alto Networks Cortex)
No auth needed
Prerequisites: Low-privileged user access · Ability to register a startup task · System reboot
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 5.5
EPSS 0.0026
EPSS Percentile 49.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-276
Status published
Products (1)
microsoft/windows_defender_antimalware_platform < 4.18.24010.12
Published Mar 12, 2024
Tracked Since Feb 18, 2026