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TI-2026-77668 Aliases CVE-2026-93744GHSA-74rc-m28c-966r

Improper authentication in IBM i Navigator allows security bypass

Priority LOW 35CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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-287.

Summary

IBM i 7.3, 7.4, 7.5 and 7.6 contain improper authentication (CWE-287) in the Navigator application. An unauthenticated remote attacker can bypass security restrictions by sending a specially crafted HTTP request to any Navigator URL before authentication, which alters server-side session security state.

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 an unathenticated remote attacker to bypass security restrictions due to improper access control. By sending a specially crafted HTTP request to any URL within the Navigator application prior to authentication, a bad actor could exploit this vulnerability to alter server-side session security state.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00427 37th 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
Yes
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 names CNA · 3

CPEVersionsRoleVendor
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*7.5—IBM
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*7.4—IBM
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*7.3—IBM
  • cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:* Versions 7.5 — ·IBM
  • cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:* Versions 7.4 — ·IBM
  • cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:* Versions 7.3 — ·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. 2026-10-21 Threatist record created from CVE-2026-93744
  2. 2026-10-21 Alias added: GHSA-74rc-m28c-966r
  3. 2026-10-21 CISA SSVC decision points changed
  4. 2026-10-21 Priority changed: MEDIUM → LOW

References

Patch 1

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
See all 9711 →

Sources

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