CVE-2026-122193
waiting for further signalsZero needs more public information before it can validate it.GHSA-95g5-m242-wvhr ↗EUVD-2026-118379 ↗
description
Trusted Remote Execution deployments using Rex-RO or Rex-RW SSM documents generated by the example provisioning script are affected. An authenticated user allowed to run one of those documents may run commands with root privileges on a managed instance and circumvent Cedar policy controls.
mitigation
Upgrade rust rex-runner to version 0.1.0. Remove Rex-RO and Rex-RW SSM documents created by the example script from every affected account and Region.
fixed in 0.1.0
outcome
Contextual, not validated: no deterministic check could cover this one, and no technique passed our review.
source signals
Public signals that triggered or updated the pipeline. These are inputs for the deltas above.
- 2026-11-06 17:09Zcve_org: trigger signal, started the run
this entry in the feed
GET /api/v1/feed/CVE-2026-122193
{ "etk_id": "ETK-2026-3740", "cve_id": "CVE-2026-122193", "display_id": "CVE-2026-122193", "ghsa_id": "GHSA-95g5-m242-wvhr", "euvd_id": "EUVD-2026-118379", "status": "published", "anchor_state": "anchored", "title": "Command injection in trusted-remote-execution REX SSM documents", "summary": "Trusted Remote Execution deployments using Rex-RO or Rex-RW SSM documents generated by the example provisioning script are affected. An authenticated user allowed to run one of those documents may run commands with root privileges on a managed instance and circumvent Cedar policy controls.", "mitigation": "Upgrade rust rex-runner to version 0.1.0. Remove Rex-RO and Rex-RW SSM documents created by the example script from every affected account and Region.", "vendor": "AWS", "product": "trusted-remote-execution", "affected": [ { "affected_notes": [], "affected_ranges": [ "0.1.0" ], "ecosystem": "rust", "fixed_versions": [ "0.1.0" ], "package_name": "rex-runner", "purl": "pkg:cargo/rex-runner" } ], "cwes": [ 78 ], "cvss_score": 9.3, "cvss_src": "cna_vendor", "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:N", "epss_score": null, "epss_percentile": null, "epss_asof": null, "automation": "contextual", "check": false, "check_confidence_basis": null, "exploit": false, "pipeline_minutes": 5.436914216666667, "t0_at": "2026-11-06T17:09:11.852000+00:00", "signals": { "trigger_signal": { "at": "2026-11-06T17:09:11.852000+00:00", "days": 0, "is_lower_bound": false, "measured_at": "2026-11-06T17:09:11.852000+00:00", "url": "https://www.cve.org/CVERecord?id=CVE-2026-122193" } } }
published 2026-11-06 17:21Z
last change 2026-11-08 00:08Z
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