CVE-2026-122193
OS command injection in the example SSM documents in Trusted Remote Execution (REX)
CVSS Score
9.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | aws |
| Product | trusted-remote-execution |
| Published | Nov 6, 2026 |
| Last Updated | Nov 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
AWS / trusted-remote-execution
N/A