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High severity · published Sep 15, 2026
CVE-2026-83351
Vulnerability in the RDBMS component of Oracle Database Server
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Difficult to exploit vulnerability allows unauthenticated attacker 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 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OD
Oracle Database Server · Oracle Corporation
23.4.0 through 23.26.3 · source: vendor
Affected product
OD
Oracle Database Server
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-83351
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-83351
www.oracle.com
https://www.oracle.com/security-alerts/cspusep2026.html
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