EIP-2026-118627

PRE-CVE

Half-Life 1.1 - Invalid Command Error Response Format String

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-118627. PoCs published by Luigi Auriemma.

AI-analyzed exploit summary The entry describes a format string vulnerability in Half-Life clients where an invalid command with format specifiers triggers arbitrary code execution when the error response is displayed. The vulnerability stems from improper handling of user-controlled input in error messages.

Description

Half-Life 1.1 - Invalid Command Error Response Format String

Exploits (1)

exploitdb WRITEUP VERIFIED
by Luigi Auriemma · textremotewindows
https://www.exploit-db.com/exploits/23198

The entry describes a format string vulnerability in Half-Life clients where an invalid command with format specifiers triggers arbitrary code execution when the error response is displayed. The vulnerability stems from improper handling of user-controlled input in error messages.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: Half-Life client (version unspecified)
No auth needed
Prerequisites: Network access to a Half-Life server · Ability to send crafted commands to the server
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026