CVE-2026-46863

Name: CVE-2026-46863
Creator: NVD / NIST
Published: 2026-06-17T10:54:03.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.47%

Last modified Jun 18, 2026

CVE-2026-46863 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. 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).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.47%

37.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Oracle	Mysql Cluster	>= 8.0.11, <= 8.0.46
Oracle	Mysql Cluster	>= 8.4.0, <= 8.4.9
Oracle	Mysql Cluster	>= 9.0.0, <= 9.7.0
Oracle	Mysql Server	>= 8.4.0, <= 8.4.9
Oracle	Mysql Server	>= 9.0.0, <= 9.7.0

References

https://www.oracle.com/security-alerts/cspujun2026.htmlVendor Advisory

Timeline

Published: Jun 17, 2026
Last Modified: Jun 18, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-46863?

How severe is CVE-2026-46863?

CVE-2026-46863 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2026-46863?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-46863?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST