CVE-2026-89325 Rapid7 CVE debrief

Who should care

Defenders and administrators of Rapid7 Insight Agent on Windows systems should assess exposure and prioritize remediation. This includes reviewing system configurations, verifying InsightVM assessment content versions, and ensuring the machine PATH environment variable does not contain writable directories that could be exploited.

Why it matters

CVE-2026-89325 is a high-severity local privilege escalation vulnerability in Rapid7 Insight Agent on Windows. Defenders should prioritize remediation and verify system configurations to prevent exploitation.

• Local privilege escalation to SYSTEM privileges
• Potential for lateral movement and further exploitation
• Need for urgent review and update of InsightVM assessment content
• Verification of machine PATH environment variable for vulnerabilities

Technical summary

The vulnerability exists due to an uncontrolled search path element in InsightVM assessment content in Rapid7 Insight Agent on Windows. A local, low-privileged user can execute arbitrary code as SYSTEM via a planted executable resolved from the machine PATH. The issue was addressed in assessment content version 0.0.269.0. Insight Agent versions are not directly relevant, as the vulnerability is within the assessment content. The vulnerability allows for local privilege escalation to SYSTEM privileges, potential lateral movement, and further exploitation.

Defensive priority

High priority for local privilege escalation vulnerability

Recommended defensive actions

• Review and update InsightVM assessment content to version 0.0.269.0 or later
• Verify machine PATH environment variable for writable directories
• Monitor for suspicious activity by local, low-privileged users
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The vulnerability exists in InsightVM assessment content at or below version 0.0.261.0, which was resolved in version 0.0.269.0 made available on September 15, 2026. All Insight Agent versions were affected. The assessment content is delivered to all Insight Agents via the Rapid7 Insight Platform independently of the Insight Agent version and is not customer-managed. Evidence of exposure should be verified through review of system configurations and InsightVM assessment content versions.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.