# Sco vulnerabilities

Source: https://junglewise.ai/threats/vendors/sco  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/sco.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 12 vulnerabilities in Sco: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-1999-0004, was published on 16 December 1997. 2 technologies have a page of their own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 12 (1 critical, 0 exploited in the wild)

## About Sco

SCO Group was a software company that developed Unix-based operating systems and business software.

## Latest Sco vulnerabilities

- [CVE-1999-0004: Microsoft Outlook and Solaris mailtool buffer overflow in MIME parsing](https://junglewise.ai/threats/cve-1999-0004-microsoft-outlook-and-solaris-mailtool-buffer-overflow-in-mime) (medium, CVSS 5, published 16 Dec 1997)
- [CVE-1999-1209: SCO OpenServer scoterm privilege escalation](https://junglewise.ai/threats/cve-1999-1209-sco-openserver-scoterm-privilege-escalation) (high, CVSS 7.2, published 20 Nov 1997)
- [CVE-1999-0524: Multiple Vendors ICMP Information Disclosure via Netmask and Timestamp Requests](https://junglewise.ai/threats/cve-1999-0524-multiple-vendors-icmp-information-disclosure-via-netmask-and) (low, CVSS 2.1, published 1 Aug 1997)
- [CVE-1999-0153: Microsoft Windows 95/NT denial of service in NetBIOS via OOB data](https://junglewise.ai/threats/cve-1999-0153-microsoft-windows-95-nt-denial-of-service-in-netbios-via-oob-data) (medium, CVSS 5, published 1 Jul 1997)
- [CVE-1999-1252: SCO UnixWare privilege escalation via system call](https://junglewise.ai/threats/cve-1999-1252-sco-unixware-privilege-escalation-via-system-call) (high, CVSS 7.2, published 4 Sep 1996)
- [CVE-1999-1253: SCO OpenServer privilege escalation in kernel error handling routine](https://junglewise.ai/threats/cve-1999-1253-sco-openserver-privilege-escalation-in-kernel-error-handling) (high, CVSS 7.2, published 7 Jun 1996)
- [CVE-1999-1304: SCO UNIX privilege escalation in login](https://junglewise.ai/threats/cve-1999-1304-sco-unix-privilege-escalation-in-login) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1305: SCO UNIX privilege escalation in at program](https://junglewise.ai/threats/cve-1999-1305-sco-unix-privilege-escalation-in-at-program) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1303: SCO UNIX privilege escalation in prwarn](https://junglewise.ai/threats/cve-1999-1303-sco-unix-privilege-escalation-in-prwarn) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1302: SCO UNIX privilege escalation in pt_chmod](https://junglewise.ai/threats/cve-1999-1302-sco-unix-privilege-escalation-in-pt-chmod) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1138: SCO UNIX insecure home directory permissions for system accounts](https://junglewise.ai/threats/cve-1999-1138-sco-unix-insecure-home-directory-permissions-for-system-accounts) (critical, CVSS 10, published 17 Sep 1993)
- [CVE-1999-1162: SCO UNIX passwd denial of service](https://junglewise.ai/threats/cve-1999-1162-sco-unix-passwd-denial-of-service) (medium, CVSS 6.4, published 24 May 1993)

## Most severe Sco vulnerabilities

- [CVE-1999-1138: SCO UNIX insecure home directory permissions for system accounts](https://junglewise.ai/threats/cve-1999-1138-sco-unix-insecure-home-directory-permissions-for-system-accounts) (critical, CVSS 10, published 17 Sep 1993)
- [CVE-1999-1209: SCO OpenServer scoterm privilege escalation](https://junglewise.ai/threats/cve-1999-1209-sco-openserver-scoterm-privilege-escalation) (high, CVSS 7.2, published 20 Nov 1997)
- [CVE-1999-1252: SCO UnixWare privilege escalation via system call](https://junglewise.ai/threats/cve-1999-1252-sco-unixware-privilege-escalation-via-system-call) (high, CVSS 7.2, published 4 Sep 1996)
- [CVE-1999-1253: SCO OpenServer privilege escalation in kernel error handling routine](https://junglewise.ai/threats/cve-1999-1253-sco-openserver-privilege-escalation-in-kernel-error-handling) (high, CVSS 7.2, published 7 Jun 1996)
- [CVE-1999-1304: SCO UNIX privilege escalation in login](https://junglewise.ai/threats/cve-1999-1304-sco-unix-privilege-escalation-in-login) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1305: SCO UNIX privilege escalation in at program](https://junglewise.ai/threats/cve-1999-1305-sco-unix-privilege-escalation-in-at-program) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1303: SCO UNIX privilege escalation in prwarn](https://junglewise.ai/threats/cve-1999-1303-sco-unix-privilege-escalation-in-prwarn) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1302: SCO UNIX privilege escalation in pt_chmod](https://junglewise.ai/threats/cve-1999-1302-sco-unix-privilege-escalation-in-pt-chmod) (high, CVSS 7.2, published 30 Nov 1994)
- [CVE-1999-1162: SCO UNIX passwd denial of service](https://junglewise.ai/threats/cve-1999-1162-sco-unix-passwd-denial-of-service) (medium, CVSS 6.4, published 24 May 1993)
- [CVE-1999-0004: Microsoft Outlook and Solaris mailtool buffer overflow in MIME parsing](https://junglewise.ai/threats/cve-1999-0004-microsoft-outlook-and-solaris-mailtool-buffer-overflow-in-mime) (medium, CVSS 5, published 16 Dec 1997)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sco technologies

- [Sco UNIX](https://junglewise.ai/threats/technologies/unix): 7 vulnerabilities
- [Sco OpenServer](https://junglewise.ai/threats/technologies/openserver): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Sco vulnerabilities", https://junglewise.ai/threats/vendors/sco, 9 November 2026.