How severe is CVE-2026-101771?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Oracle Corporation MySQL Cluster

CVE-2026-101771

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Published 2026-10-20.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Oracle Corporation MySQL Cluster — versions 26.7.0-26.7.1, 8.0.0-8.0.49, 8.4.0-8.4.12
Oracle Corporation MySQL Server — versions 26.7.0-26.7.1, 8.4.0-8.4.12, 9.7.0-9.7.3

References

www.oracle.com/security-alerts/cpuoct2026.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-101771?: CVE-2026-101771 is a high-severity vulnerability in Oracle Corporation MySQL Cluster. CVSS score: 8.1/10. Published 2026-10-20.
How severe is CVE-2026-101771?: High severity. CVSS v3 base score is 8.1 out of 10.