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Cited CVE id is in the NVD or CISA KEV record.

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Home/Tech/IBM i 7.6 hit by high-severity file ownership vulnerability
VERIFIEDBy Xavier Rivera·Tuesday, September 29, 2026 at 2:38 PM EDT·1 min read

IBM i 7.6 hit by high-severity file ownership vulnerability

IBM i 7.6 and earlier releases contain CVE-2026-84414, a CVSS 7.8 flaw that allows local authenticated attackers to change ownership of arbitrary files. The vulnerability affects system integrity across four supported versions and requires immediate review of IBM guidance.

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IBM i 7.6 hit by high-severity file ownership vulnerability
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TL;DRAI · 60 sec read

IBM i versions 7.6, 7.5, 7.4, and 7.3 contain CVE-2026-84414, a high-severity flaw that lets a local authenticated attacker change ownership of arbitrary files. The vulnerability stems from improper validation of an attacker-controlled file path. It scores 7.8 on CVSS with high impact to confidentiality, integrity, and availability.

IBM i versions 7.6, 7.5, 7.4, and 7.3 contain a high-severity vulnerability that lets a local authenticated attacker change the ownership of arbitrary files.

IBM i releases affected by CVE-2026-84414. The flaw impacts four consecutive releases of the operating system. NVD lists the CVSS score at 7.8 with a HIGH severity rating.
The vulnerability stems from improper validation of an attacker-controlled file path.

The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This places the attack in the local attack vector category with low complexity and no user interaction required.
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Attack method and impact. The vulnerability stems from improper validation of an attacker-controlled file path. A local authenticated attacker can exploit the flaw to alter file ownership on the system.
Successful exploitation grants the attacker control over file permissions that should remain restricted.
Successful exploitation grants the attacker control over file permissions that should remain restricted. The issue affects confidentiality, integrity, and availability at the high level according to the CVSS metrics.
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Official reference and next steps. IBM has published details on its support site at the node referenced by NVD. Administrators should review the advisory for any available patches or mitigation guidance.
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