CVE-2024-20674

HIGH

Windows Kerberos - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2024-20674. PoCs published by gpotter2.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2024-20674, which bypasses Kerberos mutual authentication via a logic bug in client-side handling of Kerberos U2U TGT-REP. The exploit includes a custom SMB server and Kerberos manipulation to achieve authentication bypass, enabling arbitrary GPO serving.

Description

Windows Kerberos Security Feature Bypass Vulnerability

Exploits (1)

nomisec WORKING POC 1 stars
by gpotter2 · poc
https://github.com/gpotter2/CVE-2024-20674

This repository contains a functional exploit for CVE-2024-20674, which bypasses Kerberos mutual authentication via a logic bug in client-side handling of Kerberos U2U TGT-REP. The exploit includes a custom SMB server and Kerberos manipulation to achieve authentication bypass, enabling arbitrary GPO serving.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Complex
Reliability
Reliable
Target: Microsoft Windows Kerberos client
No auth needed
Prerequisites: Network Man-in-the-Middle position · Unauthenticated access to target network
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.1717
EPSS Percentile 96.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-290 CWE-305
Status published
Products (14)
microsoft/windows_10_1507 < 10.0.10240.20402 (2 CPE variants)
microsoft/windows_10_1607 < 10.0.14393.6614 (2 CPE variants)
microsoft/windows_10_1809 < 10.0.17763.5329 (3 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.3930 (3 CPE variants)
microsoft/windows_10_22h2 < 10.0.19045.3930 (3 CPE variants)
microsoft/windows_11_21h2 < 10.0.22000.2713 (2 CPE variants)
microsoft/windows_11_22h2 < 10.0.22621.3007 (2 CPE variants)
microsoft/windows_11_23h2 < 10.0.22631.3007 (2 CPE variants)
microsoft/windows_server_2008 (2 CPE variants)
microsoft/windows_server_2012
... and 4 more
Published Jan 09, 2024
Tracked Since Feb 18, 2026