CVE-2026-16867: 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.
Other sources
IBM i could allow a remote attacker to access server resources with the privileges of an authenticated user due to improper authentication during NTLM session negotiation.
— IBM
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM i 7.6to a version that resolves this vulnerability.Fixed in 7.6Patch MJ10939 - Upgrade
Upgrade
IBM i 7.5to a version that resolves this vulnerability.Fixed in 7.5Patch MJ10938 - Upgrade
Upgrade
IBM i 7.4to a version that resolves this vulnerability.Fixed in 7.4Patch MJ10937 - Upgrade
Upgrade
IBM i 7.3to a version that resolves this vulnerability.Fixed in 7.3Patch MJ10936
Event History
Frequently Asked Questions
What is the severity of CVE-2026-16867?
The severity of CVE-2026-16867 is high with a CVSS score of 8.1.
How do I fix CVE-2026-16867?
To fix CVE-2026-16867, apply the latest patches provided for IBM i versions affected by this vulnerability.
What systems are affected by CVE-2026-16867?
CVE-2026-16867 affects IBM i versions 7.6, 7.5, 7.4, and 7.3.
What type of vulnerability is CVE-2026-16867?
CVE-2026-16867 is an improper authentication vulnerability that allows remote attackers to access server resources.
Can CVE-2026-16867 allow remote code execution?
Yes, CVE-2026-16867 could allow a remote attacker to access server resources with the privileges of an authenticated user.