CVE-2022-27452Public exploitNetwork attack vector

Server crash via stale virtual-column expression state

Published Apr 14, 2022 · Updated Aug 3, 2024

Denial of service in affected MariaDB Server 10.2 through 10.9 builds allows attackers to crash the server via crafted SQL. The virtual-column expression lifecycle leaves session-dependent expression state invalid between table uses, and item comparison evaluation dereferences that stale state in sql/item_cmpfunc.cc. An attacker must be able to create and query a table with a crafted generated virtual-column expression; successful exploitation terminates the server process and interrupts database service.

CVSS severity7.5
High
EPSS probability2.19%
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 affected MariaDB Server 10.2 through 10.9 builds allows attackers to crash the server via crafted SQL. The virtual-column expression lifecycle leaves session-dependent expression state invalid between table uses, and item comparison evaluation dereferences that stale state in sql/item_cmpfunc.cc. An attacker must be able to create and query a table with a crafted generated virtual-column expression; successful exploitation terminates the server process and interrupts database service.

The record

CVE
CVE-2022-27452
Published
Apr 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
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

7.5NIST NVDCVSS: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 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

T1499.004Endpoint Denial of Service Application 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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