CVE-2026-21964

10 documents9 sources
Severity
4.9MEDIUM
EPSS
0.0%
top 84.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedJan 20
Latest updateFeb 3

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). 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 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 (Avail

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HExploitability: 1.2 | Impact: 3.6

Affected Packages4 packages

CVEListV5oracle_corporation/mysql_server8.0.08.0.44+2
NVDoracle/mysql8.0.08.0.44+2
Ubuntumysql-8.0< 8.0.45-0ubuntu0.22.04.1+2
Ubuntumysql-8.4< 8.4.8-0ubuntu0.25.10.1

🔴Vulnerability Details

3
GHSA
GHSA-jjjh-9j5x-gr7x: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling)2026-01-21
OSV
CVE-2026-21964: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling)2026-01-20
CVEList
CVE-2026-21964: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling)2026-01-20

📋Vendor Advisories

5
Ubuntu
MySQL vulnerabilities2026-02-03
Ubuntu
MySQL vulnerabilities2026-02-02
Red Hat
mysql: Thread Pooling unspecified vulnerability (CPU Jan 2026)2026-01-20
Oracle
Oracle Oracle MySQL Risk Matrix: Server: Thread Pooling — CVE-2026-219642026-01-15
Debian
CVE-2026-21964: mysql-8.0 - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Th...2026

🕵️Threat Intelligence

1
Wiz
CVE-2026-21964 Impact, Exploitability, and Mitigation Steps | Wiz
CVE-2026-21964 (MEDIUM CVSS 4.9) | Vulnerability in the MySQL Server p | cvebase.io