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9.8

IBM AIX and PowerVM VIOS let attackers run code remotely

CVE-2026-17157 · published 14 days ago
Summary

Versions of IBM AIX (7.2 and 7.3) and PowerVM VIOS (4.1) contain a coding error that could let a remote attacker run any program on the server. This could give the attacker full control of the system. Install the latest IBM security updates and restrict network access to these servers.

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 stack 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 stack buffer overflow.
References
Severity
9.8 Critical
CVSS 3.1: 9.8 (MITRE)
Exploitation
EPSS <1%
Type
CWE-787Out-of-bounds Write
Timeline
Published20 Aug 2026
Updated3 Sep 2026
First seen20 Aug 2026
Sources
CVE-2026-17157 · NVD
CVE-2026-17157 · MITRE
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