{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-3608", "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "state": "PUBLISHED", "assignerShortName": "isc", "dateReserved": "2026-03-05T17:47:36.088Z", "datePublished": "2026-03-25T08:46:48.992Z", "dateUpdated": "2026-07-15T01:02:33.862Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc", "dateUpdated": "2026-03-25T08:46:48.992Z" }, "title": "Stack overflow in Kea daemons", "datePublic": "2026-03-25T00:00:00.000Z", "affected": [ { "vendor": "ISC", "product": "Kea", "versions": [ { "version": "2.6.0", "lessThanOrEqual": "2.6.4", "status": "affected", "versionType": "custom" }, { "version": "3.0.0", "lessThanOrEqual": "3.0.2", "status": "affected", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.0", "versionEndIncluding": "2.6.4" }, { "vulnerable": true, "criteria": "cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0.0", "versionEndIncluding": "3.0.2" } ] } ] } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-617", "description": "CWE-617 Reachable Assertion" } ] } ], "descriptions": [ { "lang": "en", "value": "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." } ], "impacts": [ { "descriptions": [ { "lang": "en", "value": "Loss of DHCP services" } ] } ], "workarounds": [ { "lang": "en", "value": "Securing the API sockets with TLS, and requiring the client to authenticate with a certificate (mutual authentication), prevents the attacker from establishing an API connection to Kea. Set cert-required to true (the default) to require a client certificate. See: https://kea.readthedocs.io/en/stable/arm/security.html#tls-https-configuration" } ], "exploits": [ { "lang": "en", "value": "We are not aware of any active exploits." } ], "solutions": [ { "lang": "en", "value": "Upgrade to the patched release most closely related to your current version of Kea: 2.6.5 or 3.0.3." } ], "credits": [ { "lang": "en", "value": "ISC would like to thank Ali Norouzi of Keysight for bringing this vulnerability to our attention." } ], "references": [ { "url": "https://kb.isc.org/docs/cve-2026-3608", "name": "CVE-2026-3608", "tags": [ "vendor-advisory" ] }, { "url": "https://downloads.isc.org/isc/kea/2.6.5", "tags": [ "patch" ] }, { "url": "https://downloads.isc.org/isc/kea/3.0.3", "tags": [ "patch" ] } ], "source": { "discovery": "EXTERNAL" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-25T13:26:04.073699Z", "id": "CVE-2026-3608", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-25T13:26:12.153Z" } }, { "title": "CVE Program Container", "references": [ { "url": "http://www.openwall.com/lists/oss-security/2026/03/25/6" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-03-25T17:22:19.777Z" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:10.1" ], "defaultStatus": "affected", "packageName": "kea", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "0:3.0.1-3.el10_1", "versionType": "rpm" } ] }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux_eus:10.0" ], "defaultStatus": "affected", "packageName": "kea", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "0:2.6.3-2.el10_0.3", "versionType": "rpm" } ] } ], "datePublic": "2026-03-25T08:46:48.992Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in Kea. A remote attacker can send 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. This can cause a stack overflow error, leading to the daemon exiting and resulting in a Denial of Service (DoS)." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-617", "description": "Reachable Assertion", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-3608" }, { "name": "RHBZ#2451139", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451139" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3608.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:11344" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:7342" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:11344: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)" }, { "lang": "en", "value": "RHSA-2026:7342: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)" } ], "timeline": [ { "lang": "en", "time": "2026-03-25T09:01:15.192Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-03-25T08:46:48.992Z", "value": "Made public." } ], "title": "Kea: Kea: Denial of Service via maliciously crafted message", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:02:33.862Z" } } ] } }