CVE-2026-14512 IBM WebSphere Application Server is affected by an unsafe deserialization and exposure of sensitive information

What is CVE-2026-14512?

CVE-2026-14512 is a critical unsafe deserialization vulnerability in Ibm Websphere Application Server, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM WebSphere Application Server 9.0, and 8.5 traditional is vulnerable to pre-authentication unsafe deserialization which could allow a remote attacker to bypass authentication or execute arbitrary code.

Weakness: CWE-502

Which versions are affected by CVE-2026-14512?

It affects 1 product.

Products include Ibm Websphere Application Server.

How do I fix CVE-2026-14512?

No fix has been published for CVE-2026-14512 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2026-14512 being exploited?

There is no known exploitation of CVE-2026-14512 in the wild and no public exploit code.

Other vulnerabilities in Ibm Websphere Application Server

• CVE-2015-1920 Code injection in n/a Critical 10.0
• CVE-2013-0462 Other in n/a Critical 10.0
• CVE-2011-1377 Security feature bypass in n/a Critical 10.0
• CVE-2010-3186 Other in n/a Critical 10.0
• CVE-2009-1899 Information disclosure in n/a Critical 10.0

All Ibm Websphere Application Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p6cg-6q97-cwjw.