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High severity · published May 28, 2026
CVE-2026-46834
Vulnerability in the Net Service component of Oracle Database Server
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Vulnerability in the Net Service component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Net Service. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Net Service. 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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% 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 23.26.2 · source: vendor
DS
Database Server · Oracle
23.4.0 through 23.26.2 · source: NVD
Affected product
OD
Oracle Database Server
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46834
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46834
Vendor Advisory
https://www.oracle.com/security-alerts/cspumay2026.html
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