Answer in brief
CVE-2026-16840 records a Unknown severity vulnerability in Vulnerabilities in IBM AIX and PowerVM VIOS. The current sources do not mark it as known exploited. The current feed maps IBM/AIX (generic), IBM/PowerVM VIOS (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 IBM/AIX (generic), IBM/PowerVM VIOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| IBM/AIXgeneric | 7.2 || 7.3 | Not reported |
| IBM/PowerVM VIOSgeneric | 4.1 | Not reported |
Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 19, 2026
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
Quoted source text, attributed separately from HOL analysis.