Answer in brief
CVE-2018-5407 records a Unknown severity vulnerability in CVE Program Container. The current sources do not mark it as known exploited. The current feed maps N/A/Processors supporting Simultaneous Multi-Threading (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps N/A/Processors supporting Simultaneous Multi-Threading (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| N/A/Processors supporting Simultaneous Multi-Threadinggeneric | N/A | Not reported |
Published upstream
Nov 15, 2018
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 8, 2026
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
Quoted source text, attributed separately from HOL analysis.