CVE-2026-84414

Local file-ownership changes via unvalidated NAS paths

Published Sep 29, 2026 · Updated Sep 29, 2026

File ownership manipulation in IBM i 7.3 through 7.6 allows local users to change ownership of arbitrary files through Network Authentication Service. The service runs with excessive permissions and fails to validate an attacker-controlled file path before changing file ownership. An authenticated local account is required; IBM has not identified the affected routine or disclosed a remote path to the ownership operation.

CVSS severity7.8
High
EPSS probability0.09%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File ownership manipulation in IBM i 7.3 through 7.6 allows local users to change ownership of arbitrary files through Network Authentication Service. The service runs with excessive permissions and fails to validate an attacker-controlled file path before changing file ownership. An authenticated local account is required; IBM has not identified the affected routine or disclosed a remote path to the ownership operation.

The record

CVE
CVE-2026-84414
Published
Sep 29, 2026
Updated
Sep 29, 2026
Vendor
IBM
Product
IBM i
Classifications
CWE-732
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.3
  2. Affected versionversion=7.4
  3. Affected versionversion=7.5
  4. Affected versionversion=7.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

IBM · IBM iversion=7.3; version=7.4; version=7.5; version=7.6

Published CVSS scores

7.8IBMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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