CRITICAL 9.3 NVD
CVE-2026-122193
OS command injection in the example SSM document provisioning script in Trusted Remote Execution (REX) before 2026-07-28 might allow an authenticated remote use
OS command injection in the example SSM document provisioning script in Trusted Remote Execution (REX) before 2026-07-28 might allow an authenticated remote user who is permitted to invoke the Rex-RO or Rex-RW SSM document to execute arbitrary commands as root on the managed instance, bypassing Cedar policy enforcement.
To remediate this issue, users should delete any Rex-RO and Rex-RW SSM documents created from the example script, in each account and Region where it was run.
References
- https://aws.amazon.com/security/security-bulletins/2026-173-aws/
- https://github.com/trusted-remote-execution/trusted-remote-execution/security/advisories/G
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-11-06 via NVD.
Risk Timeline
CVE Disclosed2026-11-06 · 0 days ago
Remediation Resources
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