Unauthenticated, remote, high-impact takeover of Oracle Mobile Application Server (part of widely used Oracle E-Business Suite). Enterprise-wide disruption and newsworthy.
CVE-2026-83462
Unauthenticated remote takeover of Oracle Mobile Application Server (MWA).
Is CVE-2026-83462 being exploited?
Not confirmed. CVE-2026-83462 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.
How severe is CVE-2026-83462?
CVE-2026-83462 is rated Critical with a CVSS score of 9.8. 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-2026-83462?
Not known from our data. No patch reference has been recorded for CVE-2026-83462, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-83462 affect?
CVE-2026-83462 affects Oracle Mobile Application Server (MWA Terminal Server) 12.2.3-12.2.15, Oracle E-Business Suite (MWA component). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-83462?
Isolate/segregate MWA, block TCP access, apply vendor patch when available, monitor logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote compromise via TCP allowing full takeover of the MWA server: remote code execution, data access, service disruption, and lateral movement.
Immediate action required
- affected>= 12.2.3 and <= 12.2.15
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.