Vulnerability in the RDBMS Listener component of Oracle Database Server. Supported versions that are affected are 19.3-19.26, 21.3-21.17 and 23.4-23.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS Listener. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all RDBMS Listener accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).
Conclusion & alert: CVE-2025-30733 is rated Low Risk (33.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.32%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.75% | 0.32% | -0.43% |
| 2 | 2026-05-25 | 0.68% | 0.75% | +0.07% |
| 3 | 2026-05-24 | — | 0.68% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| oracle | rdbms_listener | >= 19.3, <= 19.26 | cpe:2.3:a:oracle:rdbms_listener:*:*:*:*:*:*:*:* |
| oracle | rdbms_listener | >= 21.3, <= 21.17 | cpe:2.3:a:oracle:rdbms_listener:*:*:*:*:*:*:*:* |
| oracle | rdbms_listener | >= 23.4, <= 23.7 | cpe:2.3:a:oracle:rdbms_listener:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.oracle.com/security-alerts/cpuapr2025.html | Patch Vendor Advisory |
| https://driftnet.io/blog/oracle-tns-memory-leak |