CVE-2026-21968

10 documents9 sources
Severity
6.5MEDIUM
EPSS
0.1%
top 79.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Oracle Corporation Mysql ServerOracle Mysql Server
Timeline
PublishedJan 20
Latest updateFeb 3

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 (Availabilit…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶NVDoracle/mysql_server8.0.0 — 8.0.44+2
▶CVEListV5oracle_corporation/mysql_server8.0.0 — 8.0.44+2
▶Debianmariadb< 11.8.6-0+deb13u1+1

🔴Vulnerability Details

3
GHSA
GHSA-3wrf-gw7c-pqjp: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2026-01-21
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CVEList
CVE-2026-21968: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2026-01-20
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OSV
CVE-2026-21968: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer)↗2026-01-20
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📋Vendor Advisories

5
Ubuntu
MySQL vulnerabilities↗2026-02-03
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Ubuntu
MySQL vulnerabilities↗2026-02-02
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Red Hat
mysql: Optimizer unspecified vulnerability (CPU Jan 2026)↗2026-01-20
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Oracle
Oracle Oracle MySQL Risk Matrix: Server: Optimizer — CVE-2026-21968↗2026-01-15
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Debian
CVE-2026-21968: mariadb - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Op...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-21968 Impact, Exploitability, and Mitigation Steps | Wiz↗
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