{"id":"CVE-2023-53873","aliases":["EUVD-2025-203415","GHSA-h7mp-qf49-hgph"],"status":"published","title":"SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow","description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","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":0.00492,"percentile":0.42551,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2025-12-15T20:28:15Z","modified":"2026-06-17T06:46:13Z","products":[{"vendor":"flexense ltd.","product":"syncbreeze"},{"vendor":"syncbreeze","product":"syncbreeze"}],"references":[{"url":"https://www.exploit-db.com/exploits/51725","tags":["exploit"]},{"url":"https://www.syncbreeze.com/","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/syncbreeze-denial-of-service-via-login-endpoint-overflow","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53873"},{"url":"https://www.syncbreeze.com"},{"url":"https://github.com/advisories/GHSA-h7mp-qf49-hgph"}],"sources":{"cve":[{"id":"CVE-2023-53873","title":"SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow","description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","status":"published","published":"2025-12-15T20:28:15.637Z","modified":"2026-04-07T14:06:59.674Z","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-400"],"updated_at":"2026-11-02T14:35:31.264455Z"}],"euvd":[{"id":"EUVD-2025-203415","description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","status":"published","published":"2025-12-15T20:28:15Z","modified":"2026-04-07T14:06:59Z","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":"2026-11-02T19:25:13.718727Z"}],"ghsa":[{"id":"GHSA-h7mp-qf49-hgph","title":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication...","description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","status":"published","published":"2025-12-15T21:30:32Z","modified":"2025-12-15T21:30:44Z","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-400"],"updated_at":"2026-11-02T15:05:12.969095Z"}],"nvd":[{"id":"CVE-2023-53873","description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","status":"published","published":"2025-12-15T21:15:49.833Z","modified":"2026-06-17T06:46:13.733Z","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-400"],"updated_at":"2026-11-02T14:09:26.50087Z"}]}}