CVE-2025-61021Public exploitNetwork attack vector

Database crash via nested NATURAL JOIN compilation

Published Jun 23, 2026 · Updated Jun 23, 2026

Denial of service in OpenLink Virtuoso Open Source 7.2.11 allows attackers to crash the database service via crafted SQL statements. The upstream reproducer drives nested NATURAL JOIN views through sqlo_natural_join_cond during UPDATE compilation, where the process crashes; the underlying invalid operation is undisclosed. The public reproducer uses a DBA session, and the upstream report does not establish whether lower-privileged SQL access reaches the crash.

CVSS severity7.5
High
EPSS probability0.35%
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 7.2.11 allows attackers to crash the database service via crafted SQL statements. The upstream reproducer drives nested NATURAL JOIN views through sqlo_natural_join_cond during UPDATE compilation, where the process crashes; the underlying invalid operation is undisclosed. The public reproducer uses a DBA session, and the upstream report does not establish whether lower-privileged SQL access reaches the crash.

The record

CVE
CVE-2025-61021
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record 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 privilegesUnavailable in this record.

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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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