IBM i is Affected By Improper Authorization and Access Control Vulnerabilities in Network File System

published 2026-10-16 23 d ago modified 2026-10-23 16 d ago also EUVD-2026-103140

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to obtain sensitive information due to missing subtree checks during file handle resolution.

Patch / fix

links 1

ibm.com/support/pages/node/7292423 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 d ago (2026-10-21)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

IBM i

Classification

Weakness

CWE-284 Improper Access Control

References

ibm.com /support/pages/node/7292423
vendor-advisory, patch

Sources

CVE List CVE-2026-17073
NVD CVE-2026-17073

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Summary