CVE-2023-39593Public exploitNetwork attack vector

Authenticated command execution through loadable UDF

Published Oct 17, 2024 · Updated Oct 20, 2024

Command execution through the sys_exec UDF in MariaDB Server 10.5 allows remote authenticated users to run operating-system commands. A user with FILE privilege can write a shared library into the plugin directory, register it as a UDF, and invoke sys_exec inside the server process. MariaDB disputes the issue because this documented feature requires appropriate privileges and configuration and crosses no privilege boundary.

CVSS severity5.6
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command execution through the sys_exec UDF in MariaDB Server 10.5 allows remote authenticated users to run operating-system commands. A user with FILE privilege can write a shared library into the plugin directory, register it as a UDF, and invoke sys_exec inside the server process. MariaDB disputes the issue because this documented feature requires appropriate privileges and configuration and crosses no privilege boundary.

The record

CVE
CVE-2023-39593
Published
Oct 17, 2024
Updated
Oct 20, 2024
Vendor
MariaDB
Product
MariaDB Server
Classifications
T1505.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

MariaDB · MariaDB Serverversion=10.5

Published CVSS scores

5.6CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
4.7Amazon LinuxCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1505.001SQL Stored Procedures

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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