Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: LDAP Auth). Supported versions that are affected are 5.7.31 and prior and 8.0.21 and prior. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 5.7.31 and prior, 8.0.21 and prior | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mysql-8.0 | 8.0.22-0ubuntu0.20.04.2 | USN-4604-1 |
| Ubuntu 18.04 LTS | mysql-5.7 | 5.7.32-0ubuntu0.18.04.1 | USN-4604-1 |
| Ubuntu 16.04 LTS | mysql-5.7 | 5.7.32-0ubuntu0.16.04.1 | USN-4604-1 |
| Ubuntu 16.04 LTS | percona-server-5.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | mysql-5.5 | No fix yet | — |
Advisories 2
- USN-4604-1 mysql-5.7, mysql-8.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- WID-SEC-2026-0205 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 25, 2026