{"id":"CVE-2026-28198","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-28198","generatedAt":"2026-09-20T12:35:29.928Z","title":"An authenticated, low-privileged user with access to the NetBackup Flex OS management shell could bypass the cryptographic signature verification step of a privileged support command by supplying a specially formed access credential.","description":"An authenticated, low-privileged user with access to the NetBackup Flex \nOS management shell could bypass the cryptographic signature \nverification step of a privileged support command by supplying a \nspecially formed access credential. Successful exploitation grants the \nattacker an unrestricted root shell with full control over the Flex \nappliance host and all hosted containers, completely compromising \nconfidentiality, integrity, and availability.","published":"2026-09-18T12:17:25.000Z","lastModified":"2026-09-18T19:24:37.000Z","status":"Deferred","sourceIdentifier":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158","cvss":{"version":"4.0","score":9.4,"severity":"CRITICAL","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/M"},"cwe":["CWE-347"],"affected":[],"epss":{"score":0.00199,"percentile":0.10014,"date":"2026-09-19","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/cohesity/SecAdvisory/blob/master/COH-2026-0001.md","source":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"},{"url":"https://www.cvcn.gov.it/cvcn/cve/CVE-2026-28198","source":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-28198","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}