Oracle Database Server up to 19.31/21.22/23.26.2 Net Services Remote Code Execution

Summaryinfo

A vulnerability marked as critical has been reported in Oracle Database Server up to 19.31/21.22/23.26.2. This vulnerability affects unknown code of the component Net Services. This manipulation causes Remote Code Execution. This vulnerability is registered as CVE-2026-47040. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Oracle Database Server up to 19.31/21.22/23.26.2. It has been declared as critical. Affected by this vulnerability is an unknown code of the component Net Services. The manipulation with an unknown input leads to a remote code execution vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. 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 access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2026-47040 since 05/18/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/22/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Database Software

Vendor

• Oracle

Name

• Database Server

Version

• 19.0
• 19.1
• 19.2
• 19.3
• 19.4
• 19.5
• 19.6
• 19.7
• 19.8
• 19.9
• 19.10
• 19.11
• 19.12
• 19.13
• 19.14
• 19.15
• 19.16
• 19.17
• 19.18
• 19.19
• 19.20
• 19.21
• 19.22
• 19.23
• 19.24
• 19.25
• 19.26
• 19.27
• 19.28
• 19.29
• 19.30
• 19.31
• 21.0
• 21.1
• 21.2
• 21.3
• 21.4
• 21.5
• 21.6
• 21.7
• 21.8
• 21.9
• 21.10
• 21.11
• 21.12
• 21.13
• 21.14
• 21.15
• 21.16
• 21.17
• 21.18
• 21.19
• 21.20
• 21.21
• 21.22
• 23.26.0
• 23.26.1
• 23.26.2

License

• commercial

Website

• Vendor: https://www.oracle.com

CPE 2.3info

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CPE 2.2info

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