CVE-2026-46835
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
Vulnerability in the Net Service component of Oracle Database Server versions 23.4.0-23.26.2. An unauthenticated attacker with network access via TLS can cause a hang or frequent crash (complete DoS) of the service.
Risk Assessment
The attack can result in complete unavailability of the Net Service, impacting database operations and dependent applications.
Recommendation
Apply the security patch from Oracle for affected versions. Restrict network access to the service to trusted hosts only.
Other vulnerabilities in Oracle Database Server
See all- CVE-2026-71064Critical
Vulnerability in the Portable Clusterware component of Oracle Database Server affects versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. An unauthenticated attacker with access to the physical communication segment can take over the component. CVSS score is 9.6.
- CVE-2026-71063Critical
Vulnerability in the Portable Clusterware component of Oracle Database Server affects versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. An unauthenticated attacker with access to the physical communication segment can take over the component. CVSS score is 9.6.
- CVE-2026-61211Critical
Vulnerability in the RDBMS component of Oracle Database Server (versions 19.3-19.31 and 23.4.0-23.26.2) allows a low-privileged attacker with network access via Oracle Net to compromise RDBMS. Attacks may impact additional products (scope change). CVSS 9.9.
- CVE-2026-46833Critical
Vulnerability in the Net Service component of Oracle Database Server versions 23.4.0-23.26.2. Difficult to exploit, allows unauthenticated attacker with network access via TLS to compromise Net Service. Attacks may impact additional products (scope change).
- CVE-2026-83351High
Vulnerability in the RDBMS component of Oracle Database Server affecting versions 23.4.0-23.26.3. A difficult to exploit flaw allows an unauthenticated attacker with network access via Oracle Net to compromise RDBMS.
- CVE-2026-83348High
Vulnerability in the RDBMS component of Oracle Database Server affecting versions 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. An easily exploitable flaw allows a low-privileged attacker having Create DB Link privilege with network access via Oracle Net to compromise RDBMS.
- CVE-2026-83272High
Vulnerability in the Oracle Text component of Oracle Database Server affects versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. A low-privileged attacker with Create Index privilege and network access via Oracle Net can compromise Oracle Text. The vulnerability is difficult to exploit but may impact additional products (scope change).
- CVE-2026-83271High
Vulnerability in the RDBMS component of Oracle Database Server affects versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. A low-privileged attacker with Execute on DBMS_REDEFINITION privilege and network access via Oracle Net can compromise RDBMS. The vulnerability is easily exploitable.
- CVE-2026-83160High
Vulnerability in the RDBMS component of Oracle Database Server in versions 23.4.0-23.26.3. Easily exploitable, allows attacker with Create Table privilege via Oracle Net to take over RDBMS.
- CVE-2026-83156High
Vulnerability in the Oracle XML Developers Kit component of Oracle Database Server affecting versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. A low-privileged attacker with XDKC privilege and network access via Oracle Net can take over Oracle XML Developers Kit.
Original NVD description (English source)
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).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS