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TI-2026-75515 Aliases CVE-2026-17068GHSA-xcpc-99c5-x72g

IBM i NFS export version flag lets local users bypass version restrictions

Priority LOW 23CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

IBM i 7.3, 7.4, 7.5, and 7.6 could let a local attacker bypass NFS version restrictions because the export version flag is not properly enforced. The weakness is CWE-285, Improper Authorization, with a CVSS 3.1 base score of 5.4 (MEDIUM). CISA SSVC rates exploitation as none, not automatable, with partial technical impact, and the flaw is not in CISA KEV.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to bypass NFS version restrictions due to improper enforcement of the export version flag.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00112 1st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMi7.6; 7.5; 7.4; 7.3—No fix listedCNA
  • i VendorIBM Affected 7.6; 7.5; 7.4; 7.3 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*7.3VulnerableIBM
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*7.4VulnerableIBM
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*7.5VulnerableIBM
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*7.6VulnerableIBM
  • cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·IBM
  • cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·IBM
  • cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·IBM
  • cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·IBM

Remediation

The sources list no fixed version for IBM i 7.3, 7.4, 7.5, or 7.6. Until IBM publishes one, limit local access to systems that use NFS exports.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    IBM i — ibm.com/support/pages/node/7292423

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-75516 Improper access control in IBM i Network File SystemPriority LOW 24
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-17068
  2. 2026-10-18 CISA SSVC decision points changed
  3. 2026-10-18 Priority changed: MEDIUM → LOW
  4. 2026-10-18 Alias added: GHSA-xcpc-99c5-x72g
  5. 2026-10-23 CVSS score added · NVD

References

Patch 1

  • TI-2024-18115 IBM i privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-14283 IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon [] CVSS 3.1CRITICAL 9.8
  • TI-2023-14729 IBM i command execution CVSS 3.1CRITICAL 9.8
  • TI-2026-14279 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-14196 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-13994 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol CVSS 3.1CRITICAL 9.1
See all 207 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences