CVE-2022-27386Public exploitNetwork attack vector

Database crash via null query arena

Published Apr 12, 2022 · Updated Aug 3, 2024

Denial of service in MariaDB Server allows remote attackers to crash the database process by submitting a crafted SQL statement. During DEFAULT() evaluation on a view, Field::set_default passes a null arena to Query_arena::set_query_arena, causing a segmentation fault. The statement must reach SQL execution and reference a view column with a default value; successful exploitation terminates the server process and interrupts database availability.

CVSS severity7.5
High
EPSS probability2.26%
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 allows remote attackers to crash the database process by submitting a crafted SQL statement. During DEFAULT() evaluation on a view, Field::set_default passes a null arena to Query_arena::set_query_arena, causing a segmentation fault. The statement must reach SQL execution and reference a view column with a default value; successful exploitation terminates the server process and interrupts database availability.

The record

CVE
CVE-2022-27386
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1499.004Application or System Exploitation

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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