CVE-2026-9176

Local privilege escalation via improper authentication controls

Published Sep 10, 2026 · Updated Sep 10, 2026

Authentication bypass in IBM WebSphere Application Server 8.5 and 9.0 allows local users to escalate privileges and access protected resources. IBM attributes the bypass to improper authentication controls but has not disclosed the affected code locus or the incorrect operation performed on untrusted input. Exploitation requires local access and high complexity; it grants unauthorized access without a reported service interruption.

CVSS severity6.7
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in IBM WebSphere Application Server 8.5 and 9.0 allows local users to escalate privileges and access protected resources. IBM attributes the bypass to improper authentication controls but has not disclosed the affected code locus or the incorrect operation performed on untrusted input. Exploitation requires local access and high complexity; it grants unauthorized access without a reported service interruption.

The record

CVE
CVE-2026-9176
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
IBM
Product
IBM WebSphere Application Server
Classifications
CWE-94, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.5
  2. Affected versionversion=9.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM WebSphere Application Serverversion=8.5; version=9.0

Published CVSS scores

6.7IBMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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