{"id":"CVE-2024-6594","aliases":["EUVD-2024-47659","GHSA-4h99-x2cv-q42q"],"status":"published","title":"WatchGuard Firebox Single Sign-On Client Denial-of-Service","description":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.","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":"2026-11-11","score":0.00639,"percentile":0.5106,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-755"],"published":"2024-09-25T11:22:45Z","modified":"2026-08-08T00:32:15Z","products":[{"vendor":"watchguard","product":"single_sign-on_client"},{"vendor":"watchguard","product":"sso client"}],"references":[{"url":"https://www.redteam-pentesting.de/advisories/rt-sa-2024-008","tags":["technical-description"]},{"url":"https://psirt.watchguard.com/CVE-2024-6594","tags":["vendor-advisory"]},{"url":"https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-6594"},{"url":"https://github.com/advisories/GHSA-4h99-x2cv-q42q"}],"sources":{"cve":[{"id":"CVE-2024-6594","title":"WatchGuard Firebox Single Sign-On Client Denial-of-Service","description":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.","status":"published","published":"2024-09-25T11:22:45.61Z","modified":"2026-08-07T23:42:26.069Z","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-755"],"updated_at":"2026-11-02T14:34:11.305983Z"}],"euvd":[{"id":"EUVD-2024-47659","description":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.","status":"published","published":"2024-09-25T11:22:45Z","modified":"2026-08-07T23:42:26Z","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":"2026-11-02T18:02:06.573967Z"}],"ghsa":[{"id":"GHSA-4h99-x2cv-q42q","title":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client...","description":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.\n\nThis issue affects Single Sign-On Client: through 12.7.","status":"published","published":"2024-09-25T12:30:40Z","modified":"2026-08-08T00:32:15Z","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"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T15:10:12.306859Z"}],"nvd":[{"id":"CVE-2024-6594","description":"Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands.","status":"published","published":"2024-09-25T12:15:05.397Z","modified":"2026-08-08T00:16:33.567Z","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"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:10:29.044588Z"}]}}