{"id":"CVE-2025-49643","title":"An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.","summary":"An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-405"],"vendor":"zabbix","product":"frontend","affected":["frontend >= 6.0.0, < 6.0.42","frontend >= 7.0.0, < 7.0.19","frontend >= 7.2.0, < 7.2.13","frontend >= 7.4.0, < 7.4.3"],"patched":["frontend 7.4.3"],"published":"2025-12-01","updated":"2026-09-26","sourceUpdated":"2026-09-26T00:10:00.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-49643","references":[{"url":"https://support.zabbix.com/browse/ZBX-27284","label":"security@zabbix.com"}],"tags":["nvd"],"epss":0.0034,"epssPercentile":0.24708,"ingestedAt":"2026-09-26T00:22:39.982Z","slug":"CVE-2025-49643","body":"## Overview\n\nAn authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.\n\n## Affected\n\n- `frontend >= 6.0.0, < 6.0.42`\n- `frontend >= 7.0.0, < 7.0.19`\n- `frontend >= 7.2.0, < 7.2.13`\n- `frontend >= 7.4.0, < 7.4.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `frontend 7.4.3`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}