CVE-2026-14512Network attack vector

Pre-authentication code execution via unsafe deserialization

Published Jul 28, 2026 · Updated Jul 28, 2026

Unsafe deserialization in IBM WebSphere Application Server traditional 8.5 and 9.0 allows remote attackers to bypass authentication or execute code. IBM identifies pre-authentication processing of untrusted serialized data as the cause but does not disclose the receiving endpoint, class, or deserialization operation. No credentials or user interaction are required, and successful exploitation permits authentication bypass or arbitrary code execution in the server context.

CVSS severity9.8
Critical
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in IBM WebSphere Application Server traditional 8.5 and 9.0 allows remote attackers to bypass authentication or execute code. IBM identifies pre-authentication processing of untrusted serialized data as the cause but does not disclose the receiving endpoint, class, or deserialization operation. No credentials or user interaction are required, and successful exploitation permits authentication bypass or arbitrary code execution in the server context.

The record

CVE
CVE-2026-14512
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
OpenBMC Project
Product
IBM WebSphere Application Server
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

9.8IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

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

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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