CVE-2023-31611Public exploitNetwork attack vector

Database crash via mismatched UNION table creation

Published May 15, 2023 · Updated Jan 23, 2025

Denial of service in OpenLink Virtuoso Open Source 7.2.9 allows remote attackers to crash the database through crafted SQL statements. A CREATE TABLE AS query combines a three-column table with a one-value UNION ALL row and reaches an invalid __libc_longjmp path that terminates the server. The published reproduction uses the isql client with DBA authentication; the public CVSS assessment nevertheless records no privileges required.

CVSS severity7.5
High
EPSS probability0.91%
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 OpenLink Virtuoso Open Source 7.2.9 allows remote attackers to crash the database through crafted SQL statements. A CREATE TABLE AS query combines a three-column table with a one-value UNION ALL row and reaches an invalid __libc_longjmp path that terminates the server. The published reproduction uses the isql client with DBA authentication; the public CVSS assessment nevertheless records no privileges required.

The record

CVE
CVE-2023-31611
Published
May 15, 2023
Updated
Jan 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 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?

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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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')
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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