# NeXTSTEP vulnerabilities

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

Junglewise Threat Intelligence has tracked 4 vulnerabilities in NeXTSTEP: 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-1999-1193, was published on 14 May 1991.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 4 (1 critical, 0 exploited in the wild)

## About NeXTSTEP

NeXTSTEP is an object-oriented operating system developed by NeXT Computer Company in the late 1980s.

## Latest NeXTSTEP vulnerabilities

- [CVE-1999-1193: NeXT NeXTstep privilege escalation via me user in wheel group](https://junglewise.ai/threats/cve-1999-1193-next-nextstep-privilege-escalation-via-me-user-in-wheel-group) (critical, CVSS 10, published 14 May 1991)
- [CVE-1999-1392: NeXT NeXTSTEP privilege escalation in restore0.9 installation script](https://junglewise.ai/threats/cve-1999-1392-next-nextstep-privilege-escalation-in-restore0-9-installation) (high, CVSS 7.2, published 3 Oct 1990)
- [CVE-1999-1391: NeXT NeXTSTEP privilege escalation in npd](https://junglewise.ai/threats/cve-1999-1391-next-nextstep-privilege-escalation-in-npd) (high, CVSS 7.2, published 3 Oct 1990)
- [CVE-1999-1198: NeXT NeXTSTEP privilege escalation in BuildDisk](https://junglewise.ai/threats/cve-1999-1198-next-nextstep-privilege-escalation-in-builddisk) (high, CVSS 7.2, published 3 Oct 1990)

## Most severe NeXTSTEP vulnerabilities

- [CVE-1999-1193: NeXT NeXTstep privilege escalation via me user in wheel group](https://junglewise.ai/threats/cve-1999-1193-next-nextstep-privilege-escalation-via-me-user-in-wheel-group) (critical, CVSS 10, published 14 May 1991)
- [CVE-1999-1392: NeXT NeXTSTEP privilege escalation in restore0.9 installation script](https://junglewise.ai/threats/cve-1999-1392-next-nextstep-privilege-escalation-in-restore0-9-installation) (high, CVSS 7.2, published 3 Oct 1990)
- [CVE-1999-1391: NeXT NeXTSTEP privilege escalation in npd](https://junglewise.ai/threats/cve-1999-1391-next-nextstep-privilege-escalation-in-npd) (high, CVSS 7.2, published 3 Oct 1990)
- [CVE-1999-1198: NeXT NeXTSTEP privilege escalation in BuildDisk](https://junglewise.ai/threats/cve-1999-1198-next-nextstep-privilege-escalation-in-builddisk) (high, CVSS 7.2, published 3 Oct 1990)

## 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 Next technologies

- [Next](https://junglewise.ai/threats/technologies/next): 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, "NeXTSTEP vulnerabilities", https://junglewise.ai/threats/technologies/nextstep, 9 November 2026.