CVE-2000-0306

SCO OpenServer < 5.04 - Remote Buffer Overflow in calserver

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0306. PoCs published by Leshka Zakharoff.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in SCO Unix calserver, allowing remote root access. It constructs a malicious payload with shellcode to execute arbitrary commands via a crafted message sent to the vulnerable service.

Description

Buffer overflow in calserver in SCO OpenServer allows remote attackers to gain root access via a long message.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Leshka Zakharoff · cremotesco
https://www.exploit-db.com/exploits/20620

This exploit targets a buffer overflow vulnerability in SCO Unix calserver, allowing remote root access. It constructs a malicious payload with shellcode to execute arbitrary commands via a crafted message sent to the vulnerable service.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: SCO Unix calserver (SCO OpenServer Enterprise System v 5.0.4p)
No auth needed
Prerequisites: Network access to the vulnerable calserver service · Knowledge of the target port (default 6373)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Vendor Advisory vendor-advisory x_refsource_sco
ftp://ftp.sco.com/SSE/security_bulletins/SB-99.02a

Scores

EPSS 0.0369
EPSS Percentile 88.3%

Details

Status published
Products (1)
sco/openserver < 5.04
Published Mar 12, 2001
Tracked Since Feb 18, 2026