Oracle Access Manager is widely deployed enterprise SSO/authentication infrastructure; unauthenticated remote takeover of OAM would disrupt many organizations and make major headlines.
CVE-2026-73940
Unauthenticated remote takeover of Oracle Access Manager via T3/IIOP.
Is CVE-2026-73940 being exploited?
Not confirmed. CVE-2026-73940 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-2026-73940?
CVE-2026-73940 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-2026-73940?
Not known from our data. No patch reference has been recorded for CVE-2026-73940, 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-2026-73940 affect?
CVE-2026-73940 affects Oracle Access Manager 12.2.1.4.0, Oracle Access Manager 14.1.2.1.0, Oracle Fusion Middleware Authentication Engine. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73940?
Apply vendor patches/mitigations ASAP; block T3/IIOP and restrict OAM network access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote authentication bypass allowing full takeover of Oracle Access Manager; SSO credential theft, account compromise and service disruption.
Immediate action required
- affected12.2.1.4.0
- affected14.1.2.1.0
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.