EUVD-2026-79686
GHSA-7w7c-wrr4-3jjw
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (oracle) · only source for this CVE.
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
AnalysisAI
Unauthenticated remote attackers can repeatedly hang or crash Oracle Net Services — the TNS-based networking layer of Oracle Database Server versions 23.4.0 through 23.26.3 — by sending crafted traffic over Oracle Net, producing a complete denial of service for database connectivity. The flaw carries a CVSS 3.1 base score of 7.5 with a network, low-complexity, no-privileges, no-user-interaction vector, so it is trivially automatable once the listener is reachable. …
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Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
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