{"id":"CVE-2026-86105","title":"An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted r…","summary":"An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted r…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","cwe":["CWE-22","CWE-176","CWE-285"],"vendor":"watchguard","product":"fireware","affected":["fireware >= 12.0, < 12.5.21","fireware >= 12.12, < 12.12.3","fireware >= 2025.0, < 2026.2.3","fireware >= 2026.3, < 2026.3.2"],"patched":["fireware 2026.3.2"],"published":"2026-09-30","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:47:02.657","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86105","references":[{"url":"https://psirt.watchguard.com/CVE-2026-86105","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"}],"tags":["nvd","cve.org"],"epss":0.00308,"epssPercentile":0.23462,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-30T14:39:57.813731Z"},"scores":{"nvd":7.1,"cna":5.3},"ingestedAt":"2026-09-29T23:52:50.547Z","slug":"CVE-2026-86105","body":"## Overview\n\nAn improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted request for a different resource which they are authorized to access.\n\n## Affected\n\n- `fireware >= 12.0, < 12.5.21`\n- `fireware >= 12.12, < 12.12.3`\n- `fireware >= 2025.0, < 2026.2.3`\n- `fireware >= 2026.3, < 2026.3.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fireware 2026.3.2`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":216826,"id":"CVE-2026-86105","ts":1791321669121,"field":"cvss","old":"5.3","new":"7.1"},{"seq":216825,"id":"CVE-2026-86105","ts":1791321669121,"field":"severity","old":"medium","new":"high"}]}