{"id":"CVE-2026-3343","title":"A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.","summary":"A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"watchguard","product":"fireware","affected":["fireware >= 12.7, < 12.11.8","fireware >= 2025.1, < 2026.1.2"],"patched":["fireware 2026.1.2"],"published":"2026-03-03","updated":"2026-08-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-3343","references":[{"url":"https://psirt.watchguard.com/CVE-2026-3343","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"},{"url":"https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"}],"tags":["nvd"],"epss":0.00206,"epssPercentile":0.10981,"ingestedAt":"2026-08-11T16:47:04.012Z","slug":"CVE-2026-3343","body":"## Overview\n\nA reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.\n\n## Affected\n\n- `fireware >= 12.7, < 12.11.8`\n- `fireware >= 2025.1, < 2026.1.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fireware 2026.1.2`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}