{"id":"CVE-2026-93864","aliases":["EUVD-2026-111158","GHSA-w55x-mg3c-c6x8"],"status":"published","title":"Fireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root","description":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00133,"percentile":0.02839,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22","CWE-377","CWE-59","CWE-73"],"published":"2026-10-27T15:52:27Z","modified":"2026-10-29T11:17:38Z","products":[{"vendor":"watchguard","product":"fireware os"}],"references":[{"url":"https://psirt.watchguard.com/CVE-2026-93864","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93864"},{"url":"https://github.com/advisories/GHSA-w55x-mg3c-c6x8"}],"sources":{"cve":[{"id":"CVE-2026-93864","title":"Fireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root","description":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.","status":"published","published":"2026-10-27T15:52:27.765Z","modified":"2026-10-29T10:45:46.897Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-22","CWE-377","CWE-59","CWE-73"],"updated_at":"2026-11-02T14:19:54.122945Z"}],"euvd":[{"id":"EUVD-2026-111158","description":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.","status":"published","published":"2026-10-27T15:52:27Z","modified":"2026-10-29T10:45:46Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H","level":"high"}],"updated_at":"2026-11-02T16:59:17.279653Z"}],"ghsa":[{"id":"GHSA-w55x-mg3c-c6x8","title":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local...","description":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.","status":"published","published":"2026-10-27T18:31:36Z","modified":"2026-10-27T18:31:36Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/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":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:14:30.115077Z"}],"nvd":[{"id":"CVE-2026-93864","description":"A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.","status":"published","published":"2026-10-27T16:17:32.71Z","modified":"2026-10-29T11:17:38.357Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/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":"high","assessor":"secondary"}],"cwes":["CWE-22","CWE-59","CWE-73","CWE-377"],"updated_at":"2026-11-02T14:13:04.037468Z"}]}}