CVE-2026-83348 Privilege escalation in Oracle Database Server
A low-privileged attacker with Create DB Link privilege can compromise the Oracle Database RDBMS, leading to full takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83348?
CVE-2026-83348 is a high-severity vulnerability in Oracle Database Server, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create DB Link privilege with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-269
Which versions are affected by CVE-2026-83348?
How do I fix CVE-2026-83348?
No fix has been published for CVE-2026-83348 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-83348 being exploited?
There is no known exploitation of CVE-2026-83348 in the wild and no public exploit code.
Sources
Also known as GHSA-66cx-hvh5-47xm.