IBM i 7.x NTLM Auth Bypass Remote Privilege Elevation
CVE-2026-16867 Published on August 13, 2026

IBM i is Affected By Multiple Vulnerabilities in NetServer
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to access server resources with the privileges of an authenticated user due to improper authentication during NTLM session negotiation.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-16867 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is an authentification Vulnerability?

When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.

CVE-2026-16867 has been classified to as an authentification vulnerability or weakness.


Products Associated with CVE-2026-16867

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IBM I
 

Affected Versions

IBM i: