{"id":"CVE-2026-28197","aliases":["EUVD-2026-82874","GHSA-3x2v-v38v-4mgx"],"status":"published","title":"Privilege Escalation via Argument Injection in NetBackup Flex OS Shell","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could supply a specially crafted input to a \nprivileged administrative command, causing it to execute arbitrary code \nwith root-level permissions. Successful exploitation grants the attacker\n unrestricted control over the Flex appliance host and all hosted \ncontainers, fully compromising confidentiality, integrity, and \navailability.","severity":{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00666,"percentile":0.52174,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-88"],"published":"2026-09-18T11:07:19Z","modified":"2026-09-18T19:24:36Z","products":[{"vendor":"cohesity","product":"netbackup flex os"}],"references":[{"url":"https://www.cvcn.gov.it/cvcn/cve/CVE-2026-28197","tags":["government-resource"]},{"url":"https://github.com/cohesity/SecAdvisory/blob/master/COH-2026-0001.md","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28197"},{"url":"https://github.com/advisories/GHSA-3x2v-v38v-4mgx"}],"sources":{"cve":[{"id":"CVE-2026-28197","title":"Privilege Escalation via Argument Injection in NetBackup Flex OS Shell","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could supply a specially crafted input to a \nprivileged administrative command, causing it to execute arbitrary code \nwith root-level permissions. Successful exploitation grants the attacker\n unrestricted control over the Flex appliance host and all hosted \ncontainers, fully compromising confidentiality, integrity, and \navailability.","status":"published","published":"2026-09-18T11:07:19.877Z","modified":"2026-09-18T14:31:44.84Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:20:01.969981Z"}],"euvd":[{"id":"EUVD-2026-82874","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could supply a specially crafted input to a \nprivileged administrative command, causing it to execute arbitrary code \nwith root-level permissions. Successful exploitation grants the attacker\n unrestricted control over the Flex appliance host and all hosted \ncontainers, fully compromising confidentiality, integrity, and \navailability.","status":"published","published":"2026-09-18T11:07:19Z","modified":"2026-09-18T14:31:44Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"}],"updated_at":"2026-11-02T17:28:08.898956Z"}],"ghsa":[{"id":"GHSA-3x2v-v38v-4mgx","title":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell...","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could supply a specially crafted input to a \nprivileged administrative command, causing it to execute arbitrary code \nwith root-level permissions. Successful exploitation grants the attacker\n unrestricted control over the Flex appliance host and all hosted \ncontainers, fully compromising confidentiality, integrity, and \navailability.","status":"published","published":"2026-09-18T12:31:20Z","modified":"2026-09-18T12:31:27Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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","level":"critical"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T15:12:09.483713Z"}],"nvd":[{"id":"CVE-2026-28197","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could supply a specially crafted input to a \nprivileged administrative command, causing it to execute arbitrary code \nwith root-level permissions. Successful exploitation grants the attacker\n unrestricted control over the Flex appliance host and all hosted \ncontainers, fully compromising confidentiality, integrity, and \navailability.","status":"published","published":"2026-09-18T12:17:24.573Z","modified":"2026-09-18T19:24:36.593Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:12:49.70655Z"}]}}