# CVE-2026-101770: Oracle MySQL Server and Cluster network vulnerability in client programs

Source: https://junglewise.ai/threats/cve-2026-101770-vulnerability-in-the-mysql-server-mysql-cluster-product-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-101770 · Severity: high · CVSS 8.1 · Published 2026-10-20

A vulnerability in Oracle MySQL Server and MySQL Cluster's client programs allows an unauthenticated attacker on the network to gain complete control over the database system. This could lead to unauthorized access to sensitive data, data modification, or complete database outage without requiring authentication or user interaction.

Technologies: [Oracle MySQL Server](https://junglewise.ai/threats/technologies/mysql-server), [Oracle Mysql Cluster](https://junglewise.ai/threats/technologies/mysql-cluster). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101770 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101770 being exploited in the wild.

**How severe is CVE-2026-101770?** High severity, with a CVSS score of 8.1, published 20 October 2026.

**Which products and versions are affected?** Oracle MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; Oracle Mysql Cluster 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.

**Is there a fix for CVE-2026-101770?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-101770 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-101770?** Check whether you run Oracle MySQL Server or Oracle Mysql Cluster at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An unauthenticated network-based vulnerability exists in MySQL Server and MySQL Cluster client programs with difficult exploitation requiring specific conditions. Attack vectors involve multiple protocols and result in complete system compromise including confidentiality, integrity, and availability impacts. The vulnerability affects multiple versions across both products.

## Affected products

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

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

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