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CVE-2026-11711— IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities

Quick assessment

Affected
IBM WebSphere Application Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component.

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
IBM WebSphere Application Server 9.0 affected
8.5 affected
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I. Basic Information for CVE-2026-11711

Vulnerability Information
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Vulnerability Title
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM WebSphere Application Server 9.0 cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-11711

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III. Intelligence Information for CVE-2026-11711

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Vendor Advisories for CVE-2026-11711 (1)

Same Patch Batch · IBM · 2026-09-18 · 90 CVEs total

CVE-2025-15399 10.0 CRITICAL Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool a
CVE-2026-10747 10.0 CRITICAL IBM MQ Appliance is affected by a heap buffer overflow vulnerability in protocol message p
CVE-2026-84064 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84075 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-10858 9.9 CRITICAL IBM MQ for HPE NonStop is vulnerable to a denial of service attack
CVE-2026-80442 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84078 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82967 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-80441 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-81657 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84082 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82340 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82832 9.6 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-75878 9.1 CRITICAL IBM Sterling File Gateway is Vulnerable to Authentication Bypass
CVE-2026-84073 9.1 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84031 9.0 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84070 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84106 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84074 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82887 8.8 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.

Showing top 20 of 90 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: WebSphere Application Server
Same vendor: IBM
Same weakness: CWE-502

V. Comments for CVE-2026-11711

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