Affects widely-used Oracle Database Net Service; unauthenticated network takeover could disrupt core IT infra.
CVE-2026-46833
Unauthenticated TLS-based exploit to takeover Oracle Net Service.
Is CVE-2026-46833 being exploited?
Not confirmed. CVE-2026-46833 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 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-46833?
CVE-2026-46833 is rated Critical with a CVSS score of 9.0. 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-2026-46833?
Yes. A fix has been recorded for CVE-2026-46833. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46833 affect?
CVE-2026-46833 affects Oracle Database Server (Net Service), Versions 23.4.0-23.26.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46833?
Patch to latest Oracle DB Net Service release when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote takeover of Net Service via TLS; full compromise of confidentiality, integrity, and availability.
Immediate action required
- affected>= 23.4.0 and <= 23.26.2
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.