CVE-1999-0778

Xi Graphics Accelerated-X Server - Buffer Overflow via Long Display or Query Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0778. PoCs published by KSR[T].

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Accelerated-X Xserver (version <=5.0) via oversized command-line arguments. It overwrites the stack to execute shellcode that creates a setuid shell at /tmp/sh, achieving local privilege escalation.

Description

Buffer overflow in Xi Graphics Accelerated-X server allows local users to gain root access via a long display or query parameter.

Exploits (1)

exploitdb WORKING POC VERIFIED
by KSR[T] · clocallinux
https://www.exploit-db.com/exploits/19370

This exploit targets a buffer overflow vulnerability in Accelerated-X Xserver (version <=5.0) via oversized command-line arguments. It overwrites the stack to execute shellcode that creates a setuid shell at /tmp/sh, achieving local privilege escalation.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Accelerated-X Xserver <=5.0
No auth needed
Prerequisites: Local access to the system · Accelerated-X Xserver installed setuid root
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/488

Scores

EPSS 0.0069
EPSS Percentile 48.0%

Details

Status published
Products (2)
xi_graphics/accelerated-x_server 4
xi_graphics/accelerated-x_server 5
Published Jun 25, 1999
Tracked Since Feb 18, 2026