{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40779 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2025-40779 is a high-severity vulnerability in ISC Kea, published on 27 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40779 and fix it if it is affected.\n\nWhat it is: CVE-2025-40779 is a high-severity vulnerability in ISC Kea, published on 27 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-40779 in the wild and no public exploit code.\n\nAffected product: ISC Kea. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-40779/ (Markdown: https://insights.sbomify.com/CVE-2025-40779/index.md)","id":"CVE-2025-40779","markdown":"https://insights.sbomify.com/CVE-2025-40779/index.md","name":"CVE-2025-40779","record":{"aliases":["GHSA-v32h-8f7r-3543","RHSA-2025:21006","openSUSE-SU-2025:15499-1","openSUSE-SU-2026:20341-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kea DHCP server","requires_auth":"none","summary":"A remote attacker can crash the Kea DHCP server by sending specific unicast requests when no subnet matches, causing a denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure.  This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem.\nThis issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.","ecosystems":["Red Hat:enterprise_linux:10.1","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Kea crash upon interaction between specific client options and subnet selection","id":"CVE-2025-40779","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":13,"n_references":1,"next":{"headline":"Cache poisoning due to weak PRNG","id":"CVE-2025-40780"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea","purl":"pkg:rpm/redhat/kea","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-debuginfo","purl":"pkg:rpm/redhat/kea-debuginfo","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-debugsource","purl":"pkg:rpm/redhat/kea-debugsource","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-devel-debuginfo","purl":"pkg:rpm/redhat/kea-devel-debuginfo","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-doc","purl":"pkg:rpm/redhat/kea-doc","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-hooks","purl":"pkg:rpm/redhat/kea-hooks","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-hooks-debuginfo","purl":"pkg:rpm/redhat/kea-hooks-debuginfo","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-keama","purl":"pkg:rpm/redhat/kea-keama","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-keama-debuginfo","purl":"pkg:rpm/redhat/kea-keama-debuginfo","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-libs","purl":"pkg:rpm/redhat/kea-libs","source":"RHSA-2025:21006"},{"ecosystem":"Red Hat:enterprise_linux:10.1","fixed":["0:3.0.1-1.el10_1"],"introduced":["0"],"last_affected":[],"package":"kea-libs-debuginfo","purl":"pkg:rpm/redhat/kea-libs-debuginfo","source":"RHSA-2025:21006"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["3.0.1-160000.1.1"],"introduced":["0"],"last_affected":[],"package":"kea","purl":"pkg:rpm/opensuse/kea\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-SU-2026:20341-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.0.1-1.1"],"introduced":["0"],"last_affected":[],"package":"kea","purl":"pkg:rpm/opensuse/kea\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:15499-1"}],"prev":{"headline":"Cache poisoning attacks with unsolicited RRs","id":"CVE-2025-40778"},"products":["Kea"],"published":"2025-08-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-04","vendors":["ISC"]},"summary":"A remote attacker can crash the Kea DHCP server by sending specific unicast requests when no subnet matches, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2025-40779/"}