# CVE-2026-78604

## Summary

- **CVE ID:** CVE-2026-78604
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-732
- **Published:** Sep 2, 2026
- **Last Modified:** Sep 3, 2026

## Description

Incorrect Permission Assignment for Critical Resource (CWE-732) in Elastic Agent can lead to local privilege escalation via Replace Binaries (CAPEC-642). On Windows systems where Elastic Agent is installed in unprivileged mode, resources used by the agent service are created with access controls broader than required. A local user could take advantage of this to cause the service to execute code of their choosing, ultimately obtaining SYSTEM-level privileges on the host.

## Affected Products

- Elastic — Elastic Agent (8.0.0)
- Elastic — Elastic Agent (9.0.0)
- Elastic — Elastic Agent (9.5.0)

## References

- [CNA](https://discuss.elastic.co/t/elastic-agent-8-19-21-9-4-6-9-5-2-security-update-esa-2026-150/390109)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.10%
- **EPSS Percentile:** 1.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._