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TI-2026-73505 Aliases CVE-2026-77816GHSA-6v8r-r3rp-wwmm

Improper certificate checks in IBM WebSphere Liberty admin client

Priority LOW 28CWE-295Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-295.

Summary

IBM WebSphere Application Server - Liberty from 17.0.0.3 through 26.0.0.9 has an administrative client that does not properly validate certificates (CWE-295). A remote, unauthenticated attacker can carry out man-in-the-middle attacks against the client and obtain sensitive information.

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

Description from the CNA

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th 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
IBMWebSphere Application Server - Liberty17.0.0.3 – 26.0.0.9—No fix listedCNA
  • WebSphere Application Server - Liberty VendorIBM Affected 17.0.0.3 – 26.0.0.9 Fixed in — No fix listed CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*17.0.0.3—IBM
cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.9:*:*:*:*:*:*:*26.0.0.9—IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:* Versions 17.0.0.3 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.9:*:*:*:*:*:*:* Versions 26.0.0.9 — ·IBM

Remediation

The sources list no fixed version for IBM WebSphere Application Server - Liberty.

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 WebSphere Application Server - Liberty — ibm.com/support/pages/node/7291394

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-73462 Information disclosure in IBM WebSphere Application Server LibertyPriority LOW 29
    • TI-2026-73509 Path traversal in IBM WebSphere Application Server LibertyPriority LOW 24
    • TI-2026-73460 Incorrect authorization in IBM WebSphere Application Server LibertyPriority LOW 24
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-77816
  2. 2026-10-13 Alias added: GHSA-6v8r-r3rp-wwmm
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-15 CISA SSVC decision points changed

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