High severity · published Sep 15, 2026
CVE-2026-83088
Vulnerability in the RDBMS component of Oracle Database Server
7.7
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. Easily exploitable vulnerability allows low privileged attacker having Authenticated User privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS. CVSS 3.1 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% 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
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-83088
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-83088
www.oracle.com
https://www.oracle.com/security-alerts/cspusep2026.html
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