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TI-2026-75518 Aliases CVE-2026-17488GHSA-x5xg-xg7r-fx87

Improper authentication in IBM i SST and DST enables security bypass

Priority LOW 28CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

IBM i 7.3, 7.4, 7.5 and 7.6 contain an improper authentication flaw (CWE-287) in SST and DST. A remote authenticated attacker with low privileges can bypass security restrictions and alter data.

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 remote authenticated attacker to bypass security restrictions due to improper authentication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0024 15th 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.

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

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-17488
  2. 2026-10-18 Alias added: GHSA-x5xg-xg7r-fx87
  3. 2026-10-19 CISA SSVC decision points changed
  4. 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