CVE-2026-78604
Published:September 02, 2026
Updated:September 22, 2026
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 Packages
https://github.com/elastic/elastic-agent.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.4.6Fix Suggestion:
Update to version v9.4.6https://github.com/elastic/elastic-agent.git (GITHUB):
Affected version(s) >=v9.5.0 <v9.5.2Fix Suggestion:
Update to version v9.5.2https://github.com/elastic/elastic-agent.git (GITHUB):
Affected version(s) >=v8.2.0 <v8.19.21Fix Suggestion:
Update to version v8.19.21Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Incorrect Permission Assignment for Critical Resource
EPSS
Base Score:
0.10