# CVE-2025-61024: OpenLink Virtuoso OpenSource DoS in sqlo_try_in_loop

Source: https://junglewise.ai/threats/cve-2025-61024-openlink-virtuoso-opensource-dos-in-sqlo-try-in-loop  
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-2025-61024 · Severity: high · CVSS 7.5 · Published 2026-06-23

OpenLink Virtuoso is a high-performance database and middleware platform used for managing large-scale data. A vulnerability in its SQL processing engine allows an attacker to crash the database service by sending specifically formatted database queries. This results in a denial-of-service, potentially disrupting business operations and data availability for applications relying on the database.

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-2025-61024 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-61024 being exploited in the wild.

**How severe is CVE-2025-61024?** High 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-2025-61024?** 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-2025-61024 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2025-61024?** 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_try_in_loop component. The issue is triggered during the compilation or execution of complex, nested SQL statements involving specific combinations of VIEW creation, GROUP BY clauses, and UPDATE operations. An unauthenticated remote attacker with the ability to execute SQL queries can trigger a null pointer dereference or similar memory corruption leading to a service crash (SIGSEGV). The vulnerability was identified via fuzzing and is documented in the project's issue tracker. At the time of reporting, a fix has not been formally confirmed in the advisory text, though a reproduction PoC is available.

## Affected products

- OpenLink Virtuoso OpenSource 7.2.11

## Timeline

- 2024-01-07: disclosed: Issue reported on GitHub with PoC
- 2026-06-23: advisory: CVE published and NVD record created

## References

- [https://github.com/openlink/virtuoso-opensource/issues/1227](https://github.com/openlink/virtuoso-opensource/issues/1227)

## Related threats

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- [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)
- [OpenLink Virtuoso OpenSource DoS in st_compare component](https://junglewise.ai/threats/cve-2025-61023-openlink-virtuoso-opensource-dos-in-st-compare-component)