{"affected":[{"defaultStatus":"unaffected","product":"trusted-remote-execution","source":"CNA: AMZN","vendor":"AWS","versions":[{"status":"affected","version":"N/A","versionType":"custom"}]}],"cveId":"CVE-2026-122193","cwes":["CWE-78"],"description":"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.\n\n\n\nTo 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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":9.9,"severity":"critical","source":"CNA: AMZN","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},{"score":9.3,"severity":"critical","source":"CNA: AMZN","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","version":"4.0"},{"score":9.3,"severity":"critical","source":"NVD: ff89ba41-3aa1-4d27-914a-91399e9639e5","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":9.9,"severity":"critical","source":"NVD: ff89ba41-3aa1-4d27-914a-91399e9639e5","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793999827030,"publishedAt":1793984951852,"references":[{"source":"CNA: AMZN","tags":["vendor-advisory"],"url":"https://aws.amazon.com/security/security-bulletins/2026-173-aws/"},{"source":"CNA: AMZN","tags":["third-party-advisory"],"url":"https://github.com/trusted-remote-execution/trusted-remote-execution/security/advisories/GHSA-95g5-m242-wvhr"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://aws.amazon.com/security/security-bulletins/2026-173-aws/"},{"source":"ff89ba41-3aa1-4d27-914a-91399e9639e5","tags":[],"url":"https://github.com/trusted-remote-execution/trusted-remote-execution/security/advisories/GHSA-95g5-m242-wvhr"}],"remediation":[],"revision":"7240a2cc567d687f2c5a56edf47551340498aa1e42295f25659dc41e9631abbb","sources":[{"modifiedAt":1793997322445,"name":"CNA: AMZN","retrievedAt":1793999353602,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122193"},{"modifiedAt":1793999827030,"name":"NVD","retrievedAt":1794011185733,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122193"}],"ssvc":{"assessedAt":1793997318533,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"OS command injection in the example SSM documents in Trusted Remote Execution (REX)","updatedAt":1794011185733}