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9.8

IBM AIX and PowerVM allow attackers to run code remotely

CVE-2026-17136 · published 1 month ago
Summary

The IBM AIX operating system versions 7.2 and 7.3, as well as the IBM PowerVM VIOS version 4.1, contain a coding mistake that could let a remote hacker make the system execute any program. This could give an attacker control over the affected servers. Install the security updates released by IBM as soon as possible and restrict network access to these systems until they are patched.

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 format string vulnerability.
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 format string vulnerability.
References
Severity
9.8 Critical
CVSS 3.1: 9.8 (MITRE)
Exploitation
EPSS <1%
Type
CWE-134Use of Externally-Controlled Format String
Timeline
Published20 Aug 2026
Updated27 Sep 2026
First seen20 Aug 2026
Sources
CVE-2026-17136 · NVD
CVE-2026-17136 · MITRE
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