CVE-1999-0830

SCO UnixWare - Buffer Overflow via Xsco Command Long Argument

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0830. PoCs published by K2.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in the SUID program Xsco on UnixWare 7. It uses shellcode to execute arbitrary commands (e.g., copying and setting SUID on /bin/ksh) by overflowing a buffer with NOP sleds and a crafted return address.

Description

Buffer overflow in SCO UnixWare Xsco command via a long argument.

Exploits (1)

exploitdb WORKING POC VERIFIED
by K2 · clocalsco
https://www.exploit-db.com/exploits/19641

This exploit targets a buffer overflow vulnerability in the SUID program Xsco on UnixWare 7. It uses shellcode to execute arbitrary commands (e.g., copying and setting SUID on /bin/ksh) by overflowing a buffer with NOP sleds and a crafted return address.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: UnixWare 7 /usr/X/bin/Xsco
No auth needed
Prerequisites: Access to a vulnerable UnixWare 7 system with /usr/X/bin/Xsco present
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0830

Scores

EPSS 0.0109
EPSS Percentile 61.1%

Details

Status published
Products (1)
sco/unixware 7.0
Published Nov 01, 1999
Tracked Since Feb 18, 2026