CVE-2026-21929: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 9.0.0-9.5.0. Difficult to exploit 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 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21929?
CVE-2026-21929 has a moderate severity level due to its difficulty in exploitation.
How do I fix CVE-2026-21929?
To mitigate CVE-2026-21929, upgrade to a version of MySQL Server that is not affected, specifically versions later than 9.5.0.
Who is affected by CVE-2026-21929?
CVE-2026-21929 affects users of Oracle MySQL Server versions from 9.0.0 to 9.5.0.
What kind of attacks can CVE-2026-21929 enable?
CVE-2026-21929 may allow a low privileged attacker with network access to compromise the MySQL Server.
Is there a known exploit for CVE-2026-21929?
Currently, there are no widely reported exploits for CVE-2026-21929, but its potential for exploitation exists.