CVE-2022-27448Public exploitNetwork attack vector

Database crash via implicit multi-update grouping

Published Apr 14, 2022 · Updated Aug 3, 2024

Reachable assertion in MariaDB Server 10.9 and earlier allows remote attackers to crash the database via a crafted multi-table UPDATE. The multi_update::initialize_tables path accepts implicit grouping from an aggregate in ORDER BY and continues into InnoDB update processing until row0mysql.cc asserts that the persistent cursor is positioned on a record. Reachability requires the ability to submit a crafted SQL statement; exploitation crashes the server without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability2.15%
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 MariaDB Server 10.9 and earlier allows remote attackers to crash the database via a crafted multi-table UPDATE. The multi_update::initialize_tables path accepts implicit grouping from an aggregate in ORDER BY and continues into InnoDB update processing until row0mysql.cc asserts that the persistent cursor is positioned on a record. Reachability requires the ability to submit a crafted SQL statement; exploitation crashes the server without reported data disclosure or modification.

The record

CVE
CVE-2022-27448
Published
Apr 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 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

7.5Canonical UbuntuCVSS:3.1/AV:N/AC:L/PR:N/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 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-617Reachable Assertion
T1499.004Application or System Exploitation Crash

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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