{"id":"CVE-2026-59783","title":"The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability","summary":"The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zab…","severity":"low","cvss":2.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","cwe":["CWE-787"],"vendor":"Zabbix","product":"Zabbix","affected":["Zabbix >= 7.0.0 <= 7.0.28","Zabbix >= 7.4.0 <= 7.4.12"],"published":"2026-10-05","updated":"2026-10-06","sourceUpdated":"2026-10-06T15:27:05.657","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59783","references":[{"url":"https://support.zabbix.com/browse/ZBX-28194","label":"security@zabbix.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59783.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-59783"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59783"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59783"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T11:46:36.816142Z"},"cvssSource":"cna","scores":{"cna":2.3,"vendor":6.5},"ingestedAt":"2026-10-05T11:18:17.202Z","epss":0.00226,"epssPercentile":0.13224,"slug":"CVE-2026-59783","body":"## Overview\n\nThe Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59783.json)","depth":"sunlit","depthScore":13,"depthScoreParts":{"impact":12.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}