Elastic Agent
Monthly
Local privilege escalation in Elastic Agent on Windows enables a low-privileged local user to achieve SYSTEM-level code execution by exploiting overly permissive access controls (CWE-732) on resources created during unprivileged-mode installation. The agent service, running as SYSTEM, will execute attacker-controlled binaries placed via the CAPEC-642 binary replacement technique. Vendor-released patches 8.19.21, 9.4.6, and 9.5.2 are available per advisory ESA-2026-150; no public exploit identified at time of analysis.
Inclusion of functionality from an untrusted control sphere in Elastic Agent subprocess, osqueryd, allows local attackers to execute arbitrary code via parameter injection. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity.
Exposure of sensitive information to local unauthorized actors in Elastic Agent and Elastic Security Endpoint can lead to loss of confidentiality and impersonation of Endpoint to the Elastic Stack. Rated medium severity (CVSS 6.2), this vulnerability is no authentication required, low attack complexity.
An issue was discovered whereby Elastic Agent will leak secrets from the agent policy elastic-agent.yml only when the log level is configured to debug. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
An issue was discovered by Elastic whereby Elastic Agent would log a raw event in its own logs at the WARN or ERROR level if ingesting that event to Elasticsearch failed with any 4xx HTTP status code. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however,. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Local privilege escalation in Elastic Agent on Windows enables a low-privileged local user to achieve SYSTEM-level code execution by exploiting overly permissive access controls (CWE-732) on resources created during unprivileged-mode installation. The agent service, running as SYSTEM, will execute attacker-controlled binaries placed via the CAPEC-642 binary replacement technique. Vendor-released patches 8.19.21, 9.4.6, and 9.5.2 are available per advisory ESA-2026-150; no public exploit identified at time of analysis.
Inclusion of functionality from an untrusted control sphere in Elastic Agent subprocess, osqueryd, allows local attackers to execute arbitrary code via parameter injection. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity.
Exposure of sensitive information to local unauthorized actors in Elastic Agent and Elastic Security Endpoint can lead to loss of confidentiality and impersonation of Endpoint to the Elastic Stack. Rated medium severity (CVSS 6.2), this vulnerability is no authentication required, low attack complexity.
An issue was discovered whereby Elastic Agent will leak secrets from the agent policy elastic-agent.yml only when the log level is configured to debug. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
An issue was discovered by Elastic whereby Elastic Agent would log a raw event in its own logs at the WARN or ERROR level if ingesting that event to Elasticsearch failed with any 4xx HTTP status code. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however,. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.