Security readout for executives and security teams
A flaw in FreeBSD's Linux compatibility layer let a user already logged into an affected FreeBSD system elevate themselves to full administrator (root). The issue affected FreeBSD versions 3.x through 5.x and was disclosed in 2000. It required local access, so it was not an internet-facing threat, but on shared or multi-user systems it represented a serious escalation risk. Exposure is limited to FreeBSD 3.x through 5.x hosts that have the Linux binary compatibility (linprocfs/linux) module enabled and that allow untrusted local shell access. Modern, patched, or non-FreeBSD systems are not in scope. Given the age of the CVE (2000) and the long-since end-of-life status of the affected releases, current fleet exposure should be near zero outside of legacy or archival systems. Low priority for modern environments. Only relevant if legacy FreeBSD 3.x through 5.x systems remain in service; in that case, treat as a high-priority local privilege escalation and prioritize decommissioning or upgrading those hosts. No customer-facing internet exposure is implied by the sources. Mitigation focus: Apply FreeBSD Security Advisory SA-00:42 patches or upgrade to a supported, current FreeBSD release.; Disable the Linux binary compatibility module on hosts that do not need it.; Restrict local shell access on multi-user FreeBSD systems to trusted users only..
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
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CVE-2000-0749 mapping review
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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
- freebsd-linux-module-bo(5968)CVE reference · vdb-entry, x_refsource_XF
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.