CVE-2025-61021

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows...

7.5 HighFix available

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.42%Up 0.3 points since Jun 24, 2026

What each source reports

CVE List Score used 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: CVE-2025-61021
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-89
Updated: 2026-11-02

EUVDEUVD-2025-210316 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: EUVD-2025-210316
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-7q5w-m9wx-x74m 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows...

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: GHSA-7q5w-m9wx-x74m
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-89
Updated: 2026-11-02

NVD 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: CVE-2025-61021
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-89
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-61021 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: DEBIAN-CVE-2025-61021
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVRHSA-2026:66026 7.5

Red Hat Security Advisory: virtuoso-opensource security update

Record: RHSA-2026:66026
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-61021 7.5

An issue in the sqlo_natural_join_cond component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Record: UBUNTU-CVE-2025-61021
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`virtuoso-opensource` Debian:12	All versions, plus listed versions 7.2.12+dfsg-0.17.2.12+dfsg-0.27.2.12+dfsg-17.2.12+dfsg-27.2.12+dfsg-3 Show 7 moreShow less 7.2.12+dfsg-47.2.5.1+dfsg1-0.37.2.5.1+dfsg1-0.47.2.5.1+dfsg1-0.57.2.5.1+dfsg1-0.67.2.5.1+dfsg1-0.77.2.5.1+dfsg1-0.8	None known
`virtuoso-opensource` Debian:13	before 7.2.12+dfsg-0.2	7.2.12+dfsg-0.2
`virtuoso-opensource` Debian:14	before 7.2.12+dfsg-0.2	7.2.12+dfsg-0.2
`virtuoso-opensource` Red Hat:rhel_els:7	before 1:6.1.6-9.el7_9	1:6.1.6-9.el7_9
`virtuoso-opensource-debuginfo` Red Hat:rhel_els:7	before 1:6.1.6-9.el7_9	1:6.1.6-9.el7_9
`virtuoso-opensource-utils` Red Hat:rhel_els:7	before 1:6.1.6-9.el7_9	1:6.1.6-9.el7_9
`virtuoso-opensource` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 6.1.6+repack-0ubuntu46.1.6+repack-0ubuntu56.1.6+repack-0ubuntu5+esm16.1.6+repack-0ubuntu5+esm2	None known
`virtuoso-opensource` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 6.1.6+repack-0ubuntu76.1.6+repack-0ubuntu96.1.6+repack-0ubuntu9+esm16.1.6+repack-0ubuntu9+esm2	None known
`virtuoso-opensource` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 6.1.6+repack-0ubuntu106.1.6+repack-0ubuntu10+esm16.1.6+repack-0ubuntu10+esm2	None known
`virtuoso-opensource` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 6.1.6+repack-0ubuntu127.2.5.1+dfsg1-0.27.2.5.1+dfsg1-0.2ubuntu0.1~esm17.2.5.1+dfsg1-0.2ubuntu0.1~esm2	None known

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Affected packages
Package	Affected	Fixed
`virtuoso-opensource` Ubuntu:Pro:24.04:LTS	All versions, plus listed versions 7.2.5.1+dfsg1-0.3ubuntu17.2.5.1+dfsg1-0.4ubuntu17.2.5.1+dfsg1-0.5ubuntu17.2.5.1+dfsg1-0.6ubuntu17.2.5.1+dfsg1-0.6ubuntu2 Show 4 moreShow less 7.2.5.1+dfsg1-0.87.2.5.1+dfsg1-0.8build17.2.5.1+dfsg1-0.8ubuntu0.1~esm17.2.5.1+dfsg1-0.8ubuntu0.1~esm2	None known
`virtuoso-opensource` Ubuntu:25.10	All versions, plus listed versions 7.2.12+dfsg-1build17.2.12+dfsg-27.2.12+dfsg-2build17.2.12+dfsg-3	None known
`virtuoso-opensource` Ubuntu:26.10	All versions, plus listed versions 7.2.12+dfsg-47.2.12+dfsg-4ubuntu17.2.12+dfsg-4ubuntu2	None known
`virtuoso-opensource` Ubuntu:26.04:LTS	All versions, plus listed versions 7.2.12+dfsg-37.2.12+dfsg-4	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-61021 is a high vulnerability (CVSS 7.5) in virtuoso-opensource, published June 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. Fixed in virtuoso-opensource 7.2.12+dfsg-0.2.

References

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