# CVE-2026-18840

## Summary

- **CVE ID:** CVE-2026-18840
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-822
- **Published:** Aug 20, 2026
- **Last Modified:** Aug 22, 2026

## Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to improper validation of an attacker-controlled pointer.

## Affected Products

- IBM — AIX (7.2)
- IBM — AIX (7.3)
- IBM — PowerVM VIOS (4.1)

## References

- [CNA](https://www.ibm.com/support/pages/node/7283858)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._