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CVE-2026-21929

🔶 medium
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Summary

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: (CV

Description

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).

CVSS Score
5.3
Medium
EPSS Score
0.0
Exploit Probability
Published Date
2026-01-20
First Seen: 2026-01-28
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.7% of all 329,456 vulnerabilities in our database.

#264,595
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jan 21, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by CISA
Last Modified 2026-01-29
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

📦 Affected Products 1

Vendor Product Status Affected Versions
oracle mysql_server Affected
> 9.0.0 < 9.5.0

🔗 References 1

https://www.oracle.com/security-alerts/cpujan2026.html
Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-46863 ⚠️ high 7.5 0.5 Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supp... 2026-06-17
CVE-2026-21936 🔶 medium 4.9 0.0 Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are... 2026-01-20
CVE-2026-21937 🔶 medium 4.9 0.0 Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). Supported versions that are affecte... 2026-01-20
CVE-2026-21941 🔶 medium 4.9 0.0 Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are a... 2026-01-20
CVE-2026-21948 🔶 medium 4.9 0.0 Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are a... 2026-01-20
CVE-2026-21949 🔶 medium 6.5 0.0 Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are a... 2026-01-20
These CVEs affect the same products