CVE-2022-27382Public exploitNetwork attack vector

Server crash via inconsistent optimizer item cleanup

Published Apr 12, 2022 · Updated Aug 3, 2024

Reachable assertion in affected MariaDB Server 10.4 through 10.7 releases allows remote attackers to crash the server via crafted SQL. During HAVING-to-WHERE condition pushdown, Item_equal::create_pushable_equalities marks only a constant parent immutable, allowing cleanup to leave an unfixed child inside a fixed item tree. The SQL interface must execute the crafted statements; a successful trigger terminates mysqld and drops every active session.

CVSS severity7.5
High
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in affected MariaDB Server 10.4 through 10.7 releases allows remote attackers to crash the server via crafted SQL. During HAVING-to-WHERE condition pushdown, Item_equal::create_pushable_equalities marks only a constant parent immutable, allowing cleanup to leave an unfixed child inside a fixed item tree. The SQL interface must execute the crafted statements; a successful trigger terminates mysqld and drops every active session.

The record

CVE
CVE-2022-27382
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-617, T1499
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

7.5OSVCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NVDAV: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499Endpoint Denial of Service

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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