CVE-2008-1127

Crysis 1.1.1.5879 - Authenticated Remote Code Execution via Format String in User Name

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2008-1127. PoCs published by Long Poke.

AI-analyzed exploit summary This exploit leverages a format string vulnerability in the Crysis engine's debug string handling via vsprintf(). By injecting a malicious format string (%n) into the player's name, an attacker can trigger arbitrary memory writes upon death, leading to potential remote code execution.

Description

Format string vulnerability in the cryactio function in Crysis 1.1.1.5879 allows remote authenticated users to execute arbitrary code via format string specifiers in the user name, which is triggered when the game character is killed.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Long Poke · textdoswindows
https://www.exploit-db.com/exploits/5201

This exploit leverages a format string vulnerability in the Crysis engine's debug string handling via vsprintf(). By injecting a malicious format string (%n) into the player's name, an attacker can trigger arbitrary memory writes upon death, leading to potential remote code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Crysis engine (version unspecified)
No auth needed
Prerequisites: Access to a Crysis multiplayer server · Ability to set a custom player name
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/29155
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2008/0735
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/5201
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/28039

Scores

EPSS 0.1282
EPSS Percentile 94.1%

Details

CWE
CWE-134
Status published
Products (1)
crytek/crysis 1.1.1.5879
Published Mar 03, 2008
Tracked Since Feb 18, 2026