# CVE-2025-61019: OpenLink Virtuoso OpenSource DoS in sqlo_key_part_best

Source: https://junglewise.ai/threats/cve-2025-61019-openlink-virtuoso-opensource-dos-in-sqlo-key-part-best  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-23. Updated: 2026-06-23  
License: CC BY 4.0 with a link back

CVE-2025-61019 · Severity: info · CVSS 7.5 · Published 2026-06-23

OpenLink Virtuoso is a high-performance database and middleware solution. A vulnerability in its SQL processing component allows an attacker to crash the database service by sending specifically crafted SQL queries. This results in a denial-of-service (DoS) condition, potentially disrupting business operations and data availability.

Technologies: [OpenLink Software Virtuoso OpenSource](https://junglewise.ai/threats/technologies/virtuoso-opensource). Vendors: [OpenLink Software](https://junglewise.ai/threats/vendors/openlink-software).

## Quick answers

**Is CVE-2025-61019 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-61019 being exploited in the wild.

**How severe is CVE-2025-61019?** Informational severity, with a CVSS score of 7.5, published 23 June 2026.

**Which products and versions are affected?** OpenLink Software Virtuoso OpenSource 7.2.11.

**Is there a fix for CVE-2025-61019?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-61019 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2025-61019?** Check whether you run OpenLink Software Virtuoso OpenSource at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A Denial of Service (DoS) vulnerability exists in OpenLink Virtuoso OpenSource v7.2.11 within the sqlo_key_part_best component. The issue is triggered during the query optimization or compilation phase when processing complex SQL statements involving specific combinations of JOINs, subqueries, and ORDER BY clauses. An attacker with the ability to execute SQL queries against the database can cause a segmentation fault (crash) in the server process. The vulnerability was identified via fuzzing and is reproducible using a specific sequence of CREATE TABLE, CREATE VIEW, and SELECT statements. At the time of reporting, the issue was demonstrated in the beta docker image and version 7.2.11.

## Affected products

- OpenLink Virtuoso OpenSource 7.2.11

## Timeline

- 2024-01-07: disclosed: Issue reported on GitHub repository
- 2026-06-23: advisory: CVE published to NVD

## References

- [https://github.com/openlink/virtuoso-opensource/issues/1222](https://github.com/openlink/virtuoso-opensource/issues/1222)

## Related threats

- [OpenLink Virtuoso OpenSource Denial of Service in sqlo_untry](https://junglewise.ai/threats/cve-2025-61029-openlink-virtuoso-opensource-denial-of-service-in-sqlo-untry)
- [OpenLink Virtuoso OpenSource DoS in sqlo_try_in_loop](https://junglewise.ai/threats/cve-2025-61024-openlink-virtuoso-opensource-dos-in-sqlo-try-in-loop)
- [OpenLink Virtuoso OpenSource Denial of Service in time_t_to_dt](https://junglewise.ai/threats/cve-2025-61028-openlink-virtuoso-opensource-denial-of-service-in-time-t-to-dt)
- [OpenLink Virtuoso OpenSource Denial of Service in t_set_push](https://junglewise.ai/threats/cve-2025-61027-openlink-virtuoso-opensource-denial-of-service-in-t-set-push)
- [OpenLink Virtuoso OpenSource Denial of Service in sslr_qst_get](https://junglewise.ai/threats/cve-2025-61025-openlink-virtuoso-opensource-denial-of-service-in-sslr-qst-get)