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8.8

IBM AIX and PowerVM VIOS Arbitrary Code Execution Risk

CVE-2026-16847 · published 2 months ago
Summary

IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1 may allow attackers to run unauthorized code on your system, which could lead to data theft or system compromise. This vulnerability affects systems that are accessible from the internet. To protect your systems, ensure you have the latest security patches installed and follow best practices for secure configuration.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm aix 7.2
ibm powervm vios 4.1
Original advisory text
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a heap buffer overflow.
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a heap buffer overflow.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
8.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published19 Aug 2026
Updated4 Nov 2026
First seen19 Aug 2026
Sources
CVE-2026-16847 · NVD
CVE-2026-16847 · MITRE
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