Security readout for executives and security teams
This flaw affects OpenBSD 5.8 and 5.9. A local user could trigger an integer truncation bug in kernel memory-management code and potentially run code with kernel privileges. That turns an existing account or foothold into full system control. Exposure is mainly legacy OpenBSD 5.8 or 5.9 systems that allow local user access. Internet-facing exposure is not indicated by the provided sources, but shell users, compromised accounts, or multi-user hosts increase relevance. Prioritize remediation where affected OpenBSD systems still exist, especially shared or administrator-accessible hosts. The vulnerability requires local access, but successful exploitation would mean kernel-level compromise. Mitigation focus: Apply the relevant OpenBSD 5.8 or 5.9 errata from the vendor.; Upgrade legacy OpenBSD hosts to a supported release where possible.; Restrict local shell access until remediation is confirmed..
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
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ATT&CK lookup starting points
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Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2016-6240 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
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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.