Security readout for executives and security teams
Plain-English summary
CVE-1999-1040 is an old local privilege-escalation issue affecting NetWare Client 1.0 on IRIX 6.3 and 6.4. A local user could reportedly gain root access through manipulation of the IFS environment variable used by ipxchk or ipxlink. Business urgency is mainly for legacy SGI/IRIX environments still in operation.
Executive priority
Treat as a legacy-environment risk. Prioritize only if the organization still operates IRIX 6.3 or 6.4 systems. If present, local root escalation on obsolete platforms can threaten operational continuity and should drive isolation, access restriction, or retirement planning.
Technical view
The CVE record describes vulnerabilities in ipxchk and ipxlink shipped with NetWare Client 1.0 on IRIX 6.3 and 6.4. The issue allows local users to gain root access via a modified IFS environmental variable. No CVSS score, CWE, vendor advisory, patch details, or detailed affected CPEs are provided in the source bundle.
Likely exposure
Exposure is likely limited to organizations still running IRIX 6.3 or 6.4 with NetWare Client 1.0 installed. Modern environments are unlikely to be affected unless they retain legacy SGI systems for manufacturing, research, or archival workloads.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The described attack requires local user access, so risk increases where untrusted users can log in to affected IRIX systems.
Researcher notes
Public source data is sparse. The CVE record provides the vulnerable utilities, product, affected IRIX versions, and IFS environment-variable vector, but not a patch, CVSS score, CWE, exploit status, or vendor advisory. Avoid assuming broader NetWare or IRIX impact beyond the stated versions.
Mitigation direction
- Inventory legacy IRIX 6.3 and 6.4 systems.
- Identify whether NetWare Client 1.0 is installed.
- Check vendor or historical SGI guidance for patches or recommended removal.
- Restrict local access to trusted administrators only.
- Retire or isolate affected legacy systems where feasible.
Validation and detection
- Confirm operating system version on legacy SGI systems.
- Confirm presence of NetWare Client 1.0.
- Check whether ipxchk and ipxlink exist on the system.
- Review local user access permissions on affected hosts.
- Document compensating controls for systems that cannot be retired.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-1999-1040 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.