Vulnerability in Oracle Net Services of Oracle Database Server
CVE-2026-83347

6.5MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Database Server
Vendor
CVE Published:
15 September 2026

What is CVE-2026-83347?

A vulnerability exists within the Oracle Net Services component of Oracle Database Server, affecting versions 23.4.0 through 23.26.3. This flaw allows unauthenticated attackers with network access to exploit Oracle Net Services, potentially leading to a Denial of Service (DoS) condition. Successful exploitation relies on human interaction from a third-party user, enabling the attacker to induce hangs or repeated crashes in the service. It's crucial for users of affected versions to take preventive measures to avoid operational disruptions.

Affected Version(s)

Oracle Database Server 23.4.0 <= 23.26.3

References

https://www.oracle.com/security-alerts/cspusep2026.html
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.