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CRITICAL · 9.6

CVE-2026-16903

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code or cause a denial of service due to an out-of-bounds write.

Vulnerability Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code or cause a denial of service due to an out-of-bounds write.

CVSS Score

9.6

CRITICAL

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
IbmVios>= 4.1.0, < 4.1.0.50
IbmAix>= 7.2.5, <= 7.2.5.212

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2026-16903?

CVE-2026-16903 is a vulnerability with a CVSS score of 9.6 (CRITICAL). IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code or cause a denial of service due to an out-of-bounds write.

How severe is CVE-2026-16903?

CVE-2026-16903 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-16903?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Vios, Ibm Aix.