EIP-2026-118883

PRE-CVE

Microsoft Windows NT 4.0 SP5 / Terminal Server 4.0 - 'Pass the Hash' with Modified SMB Client

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-118883. PoCs published by Paul Ashton.

AI-analyzed exploit summary This exploit modifies the SMB client to authenticate using a LanMan hash directly, bypassing the need for a clear-text password. It leverages a vulnerability in SMB authentication by patching the client to use precomputed hashes from the smbpasswd file.

Description

Microsoft Windows NT 4.0 SP5 / Terminal Server 4.0 - 'Pass the Hash' with Modified SMB Client

Exploits (1)

exploitdb WORKING POC VERIFIED
by Paul Ashton · textremotewindows
https://www.exploit-db.com/exploits/19197

This exploit modifies the SMB client to authenticate using a LanMan hash directly, bypassing the need for a clear-text password. It leverages a vulnerability in SMB authentication by patching the client to use precomputed hashes from the smbpasswd file.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Samba (SMB client)
Auth required
Prerequisites: Valid username and LanMan hash for an authorized account · Access to /etc/passwd and smbpasswd file · Matching UID and RID in NT
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026