IBM WebSphere AppServer 8.5/9.0 RCE via Unsafe Deserialization
CVE-2026-14974 Published on July 28, 2026

IBM WebSphere Application Server is affected by cross-site scripting and deserialization vulnerabilities
IBM WebSphere Application Server 8.5, and 9.0 traditional could allow a remote attacker to execute arbitrary code caused by unsafe deserialization of untrusted data.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-14974 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Marshaling, Unmarshaling Vulnerability?

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

CVE-2026-14974 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.


Products Associated with CVE-2026-14974

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IBM WebSphere Application Server
 

Affected Versions

IBM WebSphere Application Server: