{"id":"CVE-2026-3608","aliases":["ALPINE-CVE-2026-3608","ALSA-2026:7342","DEBIAN-CVE-2026-3608","EUVD-2026-15196","GHSA-8xcr-6f99-hm7w","RHSA-2026:11344","RHSA-2026:7342","RLSA-2026:7342","SUSE-SU-2026:1378-1","SUSE-SU-2026:1548-1","SUSE-SU-2026:20989-1","UBUNTU-CVE-2026-3608","USN-8403-1","openSUSE-SU-2026:10421-1","openSUSE-SU-2026:20452-1"],"status":"published","title":"Stack overflow in Kea daemons","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","severity":{"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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01385,"percentile":0.72408,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2026-03-25T00:00:00Z","modified":"2026-10-29T11:30:50Z","fixes":[{"ecosystem":"Alpine:v3.22","package":"kea","fixed_in":["2.6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"kea","fixed_in":["3.0.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"kea","fixed_in":["3.0.3-r0"],"sources":["osv"]},{"ecosystem":"AlmaLinux:10","package":"kea-doc","fixed_in":["3.0.1-3.el10_1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"isc-kea","fixed_in":["2.6.3-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"isc-kea","fixed_in":["3.0.3-1"],"sources":["osv"]},{"ecosystem":"Red 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overflow in Kea daemons","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T08:46:48.992Z","modified":"2026-07-15T01:02:33.862Z","cvss":[{"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":"cna"},{"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":"adp"}],"cwes":["CWE-617","CWE-617"],"updated_at":"2026-11-02T13:48:58.05327Z"}],"euvd":[{"id":"EUVD-2026-15196","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T08:46:48Z","modified":"2026-07-15T01:02:33Z","cvss":[{"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"}],"updated_at":"2026-11-02T18:19:56.47701Z"}],"ghsa":[{"id":"GHSA-8xcr-6f99-hm7w","title":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea...","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T09:31:36Z","modified":"2026-06-30T03:36:01Z","cvss":[{"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-617"],"updated_at":"2026-11-02T15:09:04.668745Z"}],"nvd":[{"id":"CVE-2026-3608","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T09:16:25.81Z","modified":"2026-07-15T02:21:01.497Z","cvss":[{"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":"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":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:12:11.077116Z"}],"osv":[{"id":"ALPINE-CVE-2026-3608","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.\nThis issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T09:16:25.81Z","modified":"2026-10-01T02:17:49.267904994Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:27:50.764331Z"},{"id":"DEBIAN-CVE-2026-3608","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T09:16:25.81Z","modified":"2026-10-01T03:02:39.092514597Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"RHSA-2026:11344","title":"Red Hat Security Advisory: kea security update","status":"published","published":"2026-04-29T10:06:29Z","modified":"2026-06-30T10:34:40Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:53:18.066978Z"},{"id":"RHSA-2026:7342","title":"Red Hat Security Advisory: kea security update","status":"published","published":"2026-04-10T10:09:13Z","modified":"2026-06-30T10:54:10Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RLSA-2026:7342","title":"Important: kea security update","description":"DHCP implementation from Internet Systems Consortium, Inc. that features fully functional DHCPv4, DHCPv6 and Dynamic DNS servers. Both DHCP servers fully support server discovery, address assignment, renewal, rebinding and release. The DHCPv6 server supports prefix delegation. Both servers support DNS Update mechanism, using stand-alone DDNS daemon.\n\nSecurity Fix(es):\n\n* Kea: Kea: Denial of Service via maliciously crafted message (CVE-2026-3608)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-04-11T12:07:07.893431Z","modified":"2026-04-11T12:30:06.399325Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"UBUNTU-CVE-2026-3608","description":"Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.","status":"published","published":"2026-03-25T00:00:00Z","modified":"2026-06-30T18:17:59.203220128Z","cvss":[{"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"},{"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"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"ALSA-2026:7342","title":"Important: kea security update","description":"DHCP implementation from Internet Systems Consortium, Inc. that features fully functional DHCPv4, DHCPv6 and Dynamic DNS servers. Both DHCP servers fully support server discovery, address assignment, renewal, rebinding and release. The DHCPv6 server supports prefix delegation. Both servers support DNS Update mechanism, using stand-alone DDNS daemon.  \n\nSecurity Fix(es):  \n\n  * Kea: Kea: Denial of Service via maliciously crafted message (CVE-2026-3608)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-04-09T00:00:00Z","modified":"2026-10-29T11:30:50.827871925Z","updated_at":"2026-11-02T15:27:55.200553Z"},{"id":"openSUSE-SU-2026:10421-1","title":"kea-3.0.3-1.1 on GA media","description":"These are all security issues fixed in the kea-3.0.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-03-25T00:00:00Z","modified":"2026-03-26T09:02:51.152255Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20452-1","title":"Security update for kea","description":"This update for kea fixes the following issues:\n\nUpdate to 3.0.3:\n\n- CVE-2025-11232: invalid characters cause assert (bsc#1252863).\n- CVE-2026-3608: stack overflow via maliciously crafted message (bsc#1260380).\n\nChangelog:\n\n * A large number of bracket pairs in a JSON payload directed to\n any endpoint would result in a stack overflow, due to recursive\n calls when parsing the JSON. This has been fixed.\n (CVE-2026-3608)\n [bsc#1260380]\n * When a hostname or FQDN received from a client is reduced to an\n empty string by hostname sanitizing, kea-dhcp4 and kea-dhcp6\n will now drop the option.\n (CVE-2025-11232)\n [bsc#1252863]\n * A null dereference is now no longer possible when configuring\n the Control Agent with a socket that lacks the mandatory\n socket-name entry.\n * UNIX sockets are now created as group-writable.\n * Removed logging an error in ping check hook library if using\n lease cache treshold.\n * Fixed deadlock in ping-check hooks library.\n * Fixed a data race in ping-check hooks library.\n","status":"published","published":"2026-04-01T09:24:21Z","modified":"2026-04-03T07:45:57.303504Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"SUSE-SU-2026:1378-1","title":"Security update for kea","description":"This update for kea fixes the following issues:\n\nUpdate to release 2.6.5:\n\n  * A large number of bracket pairs in a JSON payload directed to\n    any endpoint would result in a stack overflow, due to recursive\n    calls when parsing the JSON. This has been fixed.\n    (CVE-2026-3608)\n    [bsc#1260380]\n  * A null dereference is now no longer possible when configuring\n    the Control Agent with a socket that lacks the mandatory\n    socket-name entry.\n  * UNIX sockets are now created as group-writable.\n  * Corrected an issue in logging configuration when parsing\n    'syslog:'\n  * Earlier Kea versions could crash when handling misconfigured\n    global reservations. This has been fixed.\n  * Support for recent versions of Sphinx has been added.\n","status":"published","published":"2026-04-16T07:19:46Z","modified":"2026-04-17T09:00:57.838009Z","updated_at":"2026-11-02T15:54:01.262144Z"},{"id":"SUSE-SU-2026:1548-1","title":"Security update for kea","description":"This update for kea fixes the following issues:\n\nUpdate to release 2.6.5.\n\nSecurity issues fixed:\n\n- CVE-2026-3608: stack overflow error via specially crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or\n  kea-dhcp6 daemons(bsc#1260380).  \n\nOther updates and bugfixes:\n\n- A null dereference is now no longer possible when configuring the Control Agent with a socket that lacks the\n  mandatory socket-name entry.\n- UNIX sockets are now created as group-writable.\n- Corrected an issue in logging configuration when parsing 'syslog:'.\n- Fixed crash when handling misconfigured global reservations.\n- Support for recent versions of Sphinx has been added.\n","status":"published","published":"2026-04-22T09:40:51Z","modified":"2026-04-23T08:45:24.048079Z","updated_at":"2026-11-02T15:54:01.610851Z"},{"id":"SUSE-SU-2026:20989-1","title":"Security update for kea","description":"This update for kea fixes the following issues:\n\nUpdate to 3.0.3:\n\n- CVE-2025-11232: invalid characters cause assert (bsc#1252863).\n- CVE-2026-3608: stack overflow via maliciously crafted message (bsc#1260380).\n\nChangelog:\n\n * A large number of bracket pairs in a JSON payload directed to\n any endpoint would result in a stack overflow, due to recursive\n calls when parsing the JSON. This has been fixed.\n (CVE-2026-3608)\n [bsc#1260380]\n * When a hostname or FQDN received from a client is reduced to an\n empty string by hostname sanitizing, kea-dhcp4 and kea-dhcp6\n will now drop the option.\n (CVE-2025-11232)\n [bsc#1252863]\n * A null dereference is now no longer possible when configuring\n the Control Agent with a socket that lacks the mandatory\n socket-name entry.\n * UNIX sockets are now created as group-writable.\n * Removed logging an error in ping check hook library if using\n lease cache treshold.\n * Fixed deadlock in ping-check hooks library.\n * Fixed a data race in ping-check hooks library.\n","status":"published","published":"2026-04-01T09:22:53Z","modified":"2026-04-10T18:24:39.745551Z","updated_at":"2026-11-02T15:54:01.953589Z"},{"id":"USN-8403-1","title":"isc-kea vulnerability","description":"Ali Norouzi discovered that Kea DHCP did not properly handle maliciously\ncrafted messages over configured API sockets and HA listeners. A remote\nattacker could possibly use this issue to cause Kea DHCP to crash,\nresulting in a denial of service.","status":"published","published":"2026-06-08T14:28:06Z","modified":"2026-06-30T18:17:24.566091908Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}