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MEDIUM · 4.8

CVE-2026-16866

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

Vulnerability Description

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

CVSS Score

4.8

MEDIUM

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

Affected Products

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

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-16866?

CVE-2026-16866 is a vulnerability with a CVSS score of 4.8 (MEDIUM). IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an out-of-bounds read.

How severe is CVE-2026-16866?

CVE-2026-16866 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-16866?

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