{"id":"CVE-2011-3263","aliases":["DEBIAN-CVE-2011-3263","EUVD-2011-3227","GHSA-39vx-jv7h-w8ch"],"status":"published","title":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to...","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01294,"percentile":0.70512,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-399"],"published":"2011-08-19T21:00:00Z","modified":"2026-10-23T17:47:36Z","fixes":[{"ecosystem":"Debian:12","package":"zabbix","fixed_in":["1:1.8.6-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"zabbix","fixed_in":["1:1.8.6-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"zabbix","fixed_in":["1:1.8.6-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8.6-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8.6-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8.6-1"}]}]}],"products":[{"vendor":"zabbix","product":"zabbix"}],"references":[{"url":"http://www.zabbix.com/rn1.8.6.php","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"https://support.zabbix.com/browse/ZBX-3794","tags":["x_refsource_CONFIRM","x_transferred","Exploit","evidence"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/69378","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-3263"},{"url":"https://github.com/advisories/GHSA-39vx-jv7h-w8ch"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-3263","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-3263","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2011-08-19T21:00:00Z","modified":"2024-08-06T23:29:56.674Z","updated_at":"2026-11-02T14:35:36.968002Z"}],"euvd":[{"id":"EUVD-2011-3227","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2011-08-19T21:00:00Z","modified":"2024-08-06T23:29:56Z","updated_at":"2026-11-03T01:39:52.582864Z"}],"ghsa":[{"id":"GHSA-39vx-jv7h-w8ch","title":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to...","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2022-05-17T01:53:48Z","modified":"2023-02-03T05:05:58Z","updated_at":"2026-11-02T14:53:49.274652Z"}],"nvd":[{"id":"CVE-2011-3263","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2011-08-19T21:55:02.757Z","modified":"2026-06-16T23:32:59.313Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:02:09.988332Z"}],"osv":[{"id":"CVE-2011-3263","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2011-08-19T21:55:02Z","modified":"2026-04-10T03:41:56.660279Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-3263","description":"zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.","status":"published","published":"2011-08-19T21:55:02.757Z","modified":"2026-10-23T17:47:36.103253985Z","updated_at":"2026-11-02T15:45:24.612044Z"}]}}