CVE-2026-21968

MEDIUM 6.5CVE-2026-21968 · Published 20/01/2026 · updated 17/06/2026

In short

CVE-2026-21968 is a MEDIUM (CVSS 6.5) vulnerability affecting mysql server (oracle).
Chance of exploitation in the next 30 days (EPSS): 0.31%, higher than 23.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
mysql server oracle	`≥ 8.0.0, ≤ 8.0.44≥ 8.4.0, ≤ 8.4.7≥ 9.0.0, ≤ 9.5.0`	No fix yet

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

References

oracle.com/security-alerts/cpujan2026.html · Vendor Advisory

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Package

Affected versions

Patched versions

mysql server

oracle

≥ 8.0.0, ≤ 8.0.44≥ 8.4.0, ≤ 8.4.7≥ 9.0.0, ≤ 9.5.0

No fix yet

Description

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