# CVE-2026-92190: Quest Foglight for Databases deserialization of untrusted data RCE

Source: https://junglewise.ai/threats/cve-2026-92190-quest-foglight-for-databases-basermiserviceexporter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-92190 · Severity: critical · CVSS 9.8 · Published 2026-11-04

Quest Foglight for Databases is a monitoring and diagnostics tool for enterprise database environments. A critical vulnerability in the baseRmiServiceExporter component allows remote attackers to execute arbitrary code with SYSTEM privileges without authentication, potentially giving attackers complete control over monitored database infrastructure.

Technologies: [Quest Foglight for Databases](https://junglewise.ai/threats/technologies/foglight-for-databases). Vendors: [Quest](https://junglewise.ai/threats/vendors/quest).

## Quick answers

**Is CVE-2026-92190 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-92190 being exploited in the wild.

**How severe is CVE-2026-92190?** Critical severity, with a CVSS score of 9.8, published 4 November 2026.

**Which products and versions are affected?** Quest Foglight for Databases.

**Is there a fix for CVE-2026-92190?** Yes: fixed in Foglight 8.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-92190 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-92190?** Check whether you run Quest Foglight for Databases. 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.

## How to fix

- Fixed in Foglight 8.3

## Technical details

The vulnerability exists in improper validation of user-supplied data before deserialization in the baseRmiServiceExporter bean configuration. An unauthenticated remote attacker can send malicious serialized objects over the network to trigger arbitrary code execution in the context of the SYSTEM user. A fix is available in Foglight 8.3.

## Affected products

- Quest Foglight for Databases

## Timeline

- 2026-04-30: disclosed: Vulnerability reported to vendor
- 2026-11-03: advisory: Coordinated public release
- 2026-11-03: patched: Fixed in Foglight 8.3

## References

- [https://www.zerodayinitiative.com/advisories/ZDI-26-851/](https://www.zerodayinitiative.com/advisories/ZDI-26-851/)

## Related threats

- [Quest Foglight for Databases privilege escalation in installer](https://junglewise.ai/threats/cve-2026-92200-quest-foglight-for-databases-incorrect-permission-assignment)
- [Quest Foglight for Databases hardcoded encryption key privilege escalation](https://junglewise.ai/threats/cve-2026-92199-quest-foglight-for-databases-encryptionutil-hardcoded-encyption)
- [Quest Foglight for Databases XXE in getSource method](https://junglewise.ai/threats/cve-2026-92198-quest-foglight-for-databases-getsource-xml-external-entity)
- [Quest Foglight for Databases directory traversal remote code execution](https://junglewise.ai/threats/cve-2026-92197-quest-foglight-for-databases-unzipfile-directory-traversal-remote)
- [Quest Foglight for Databases server-side template injection in renderTemplateString](https://junglewise.ai/threats/cve-2026-92196-quest-foglight-for-databases-rendertemplatestring-server-side)