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CVE-2026-14512 is a critical unsafe deserialization vulnerability in IBM WebSphere Application Server traditional affecting the 8.5 and 9.0 release lines. The flaw is reachable prior to authentication and allows untrusted serialized data to be processed in a way that can be abused by a remote attacker. IBM describes the issue as enabling authentication bypass or arbitrary code execution. Available version information indicates affected releases include WebSphere Application Server 9.0.0.0 through 9.0.5.28 and 8.5.0.0 through 8.5.5.30. The vulnerability is remotely exploitable with low attack complexity, requires no privileges and no user interaction, and is rated CVSS v3.1 9.8.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical pre-authentication unsafe deserialization vulnerability in IBM WebSphere Application Server that allows unauthenticated remote attackers to bypass authentication or execute arbitrary code.
A pre-authentication unsafe deserialization vulnerability in IBM WebSphere Application Server that could allow remote attackers to bypass authentication or achieve arbitrary code execution.
A critical pre-authentication unsafe deserialization vulnerability in IBM WebSphere Application Server traditional that could allow authentication bypass or arbitrary code execution.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.