CVE-2026-46862 Oracle Corporation CVE debrief

Who should care

System administrators and security teams responsible for MySQL Router installations, particularly those using versions 8.4.0-8.4.9 and 9.0.0-9.7.0, should be aware of this vulnerability and take immediate action to mitigate the risk. This includes reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The vulnerability is caused by a weakness in the MySQL Router product, specifically in the Router: General component. It has a CVSS 3.1 Base Score of 7.5 and a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). The vulnerability allows unauthenticated attackers with network access via TLS to compromise MySQL Router, potentially leading to a denial of service (DOS). The affected versions are 8.4.0-8.4.9 and 9.0.0-9.7.0.

Defensive priority

High

Recommended defensive actions

• Apply the latest security patches from Oracle Corporation
• Restrict network access to MySQL Router to only trusted sources
• Monitor MySQL Router logs for suspicious activity
• Consider implementing additional security controls, such as encryption and authentication
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-06-17T10:54:03.863Z and was last modified on 2026-06-18T22:42:31.240Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and the CVE record. The vulnerability affects MySQL Router versions 8.4.0-8.4.9 and 9.0.0-9.7.0. The CVSS 3.1 Base Score is 7.5 with a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Official resources