{"id":"CVE-2026-77100","aliases":["EUVD-2026-98762","GHSA-83mj-r2gx-wf57"],"status":"published","title":"MediaAgent Denial of Service","description":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00316,"percentile":0.24757,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-10-13T14:27:01Z","modified":"2026-10-14T16:04:11Z","products":[{"vendor":"commvault","product":"commvault cloud"}],"references":[{"url":"https://documentation.commvault.com/securityadvisories/CV_2026_10_6.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77100"},{"url":"https://github.com/advisories/GHSA-83mj-r2gx-wf57"}],"sources":{"cve":[{"id":"CVE-2026-77100","title":"MediaAgent Denial of Service","description":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.","status":"published","published":"2026-10-13T14:27:01.168Z","modified":"2026-10-13T14:41:29.578Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-98762","description":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.","status":"published","published":"2026-10-13T14:27:01Z","modified":"2026-10-13T14:41:29Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:20.397021Z"}],"ghsa":[{"id":"GHSA-83mj-r2gx-wf57","title":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software...","description":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.","status":"published","published":"2026-10-13T15:32:27Z","modified":"2026-10-13T15:32:36Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:13:11.391487Z"}],"nvd":[{"id":"CVE-2026-77100","description":"MediaAgent contained a heap-based buffer overflow issue affecting service availability.  Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.","status":"published","published":"2026-10-13T15:17:49.65Z","modified":"2026-10-14T16:04:11.75Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:57.132005Z"}]}}