Affects IBM WebSphere, a widely deployed enterprise application server; RCE can disrupt critical business apps and infrastructure.
CVE-2026-14974
Remote code execution via unsafe deserialization in IBM WebSphere Application Server.
Is CVE-2026-14974 being exploited?
Not confirmed. CVE-2026-14974 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-14974?
CVE-2026-14974 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-14974?
Yes. A fix has been recorded for CVE-2026-14974. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-14974 affect?
CVE-2026-14974 affects IBM WebSphere Application Server 8.5, IBM WebSphere Application Server 9.0 (traditional). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-14974?
Apply vendor patches ASAP; restrict access to management ports and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution allowing attacker to run arbitrary code as the WebSphere process, enabling server compromise and lateral movement.
Immediate action required
- affected8.5
- affected9.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.