SB20261108150 - Multiple vulnerabilities in Oracle Database Server

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Main Vulnerability Database SB20261108150

SB20261108150 - Multiple vulnerabilities in Oracle Database Server

Published: November 8, 2026

Security Bulletin ID SB20261108150
CSH Severity
High
Patch available
YES
Number of vulnerabilities 11
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 45% Medium 55%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 11 vulnerabilities.


1) Improper input validation (CVE-ID: CVE-2026-83347)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Oracle Net Services in Oracle Database Server. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.


2) Improper input validation (CVE-ID: CVE-2026-83156)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the Oracle XML Developers Kit in Oracle Database Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.


3) Improper input validation (CVE-ID: CVE-2026-83333)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Oracle Net Services in Oracle Database Server. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.


4) Improper input validation (CVE-ID: CVE-2026-83350)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Oracle Net Services in Oracle Database Server. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.


5) Improper input validation (CVE-ID: CVE-2026-83349)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Oracle Net Services in Oracle Database Server. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.


6) Improper input validation (CVE-ID: CVE-2026-83088)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to a crash the entire system.

The vulnerability exists due to improper input validation within the RDBMS in Oracle Database Server. A remote authenticated user can exploit this vulnerability to a crash the entire system.


7) Improper input validation (CVE-ID: CVE-2026-83351)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The vulnerability exists due to improper input validation within the RDBMS in Oracle Database Server. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.


8) Improper input validation (CVE-ID: CVE-2026-83272)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the Oracle Text in Oracle Database Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.


9) Improper input validation (CVE-ID: CVE-2026-83271)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the RDBMS in Oracle Database Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.


10) Improper input validation (CVE-ID: CVE-2026-83160)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the RDBMS in Oracle Database Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.


11) Improper input validation (CVE-ID: CVE-2026-83348)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote authenticated user to execute arbitrary code.

The vulnerability exists due to improper input validation within the RDBMS in Oracle Database Server. A remote authenticated user can exploit this vulnerability to execute arbitrary code.


Remediation

Install update from vendor's website.

References