# Sco OpenServer vulnerabilities

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

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Sco OpenServer: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-1999-1209, was published on 20 November 1997.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About Sco OpenServer

SCO OpenServer is a closed-source computer operating system for x86-based hardware.

## Latest Sco OpenServer vulnerabilities

- [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-1999-0153: 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-1999-1253: 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)

## Most severe Sco OpenServer vulnerabilities

- [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-1999-1253: 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-1999-0153: 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)

## 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 |

## Other Sco technologies

- [Sco UNIX](https://junglewise.ai/threats/technologies/unix): 7 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 OpenServer vulnerabilities", https://junglewise.ai/threats/technologies/openserver, 9 November 2026.