CVE-2026-101775: Oracle MySQL Server replication integrity and availability impact

CVE-2026-101775 · Severity: high · CVSS 7.4 · Published 2026-10-20

A vulnerability in Oracle MySQL Server and MySQL Cluster's replication component allows unauthenticated attackers to modify or delete critical database data and cause service outages without authentication. This affects companies relying on MySQL for data integrity and availability, potentially enabling data tampering or complete database unavailability.

Technologies: Oracle MySQL Server, Oracle Mysql Cluster. Vendors: Oracle.

Quick answers

Is CVE-2026-101775 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-101775 being exploited in the wild.
How severe is CVE-2026-101775?
High severity, with a CVSS score of 7.4, 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-2026-101775?
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-2026-101775 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-101775?
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 attacker with network access can exploit a difficult-to-exploit vulnerability in the MySQL Server replication component to gain unauthorized data modification/deletion and denial-of-service capabilities. The vulnerability is exploitable via multiple protocols without user interaction, requiring specific access conditions. Successful exploitation results in integrity and availability compromise of the database.

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: advisory

References

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