CVE-2023-52971Network attack vector

Server crash via cross-scope LEFT JOIN references

Published Mar 8, 2025 · Updated May 12, 2025

Denial of service in MariaDB Server 10.10 through 10.11.11 and 11.0 through 11.4.5 allows remote authenticated users to crash the server. The optimizer mishandles an IN subquery containing a LEFT JOIN when its ON expression references only the join's inner side and a scope outside the subquery. High database privileges and network access are required; a successful query terminates the server process and interrupts service.

CVSS severity4.9
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in MariaDB Server 10.10 through 10.11.11 and 11.0 through 11.4.5 allows remote authenticated users to crash the server. The optimizer mishandles an IN subquery containing a LEFT JOIN when its ON expression references only the join's inner side and a scope outside the subquery. High database privileges and network access are required; a successful query terminates the server process and interrupts service.

The record

CVE
CVE-2023-52971
Published
Mar 8, 2025
Updated
May 12, 2025
Vendor
MariaDB
Product
MariaDB Server
Classifications
CWE-1038, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 8, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 2025Record 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=10.10 <10.11.*
  2. Affected versionversion=11.0 <11.4.*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MariaDB · MariaDB Serverversion=10.10 <10.11.*; version=11.0 <11.4.*

Published CVSS scores

4.9MITRECVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1038Insecure Automated Optimizations
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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