{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37127 exists.","fix":"Apply the vendor's patch.","what":"CVE-2020-37127 is a medium-severity memory corruption vulnerability in dnsmasq-utils, published on 5 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-37127 and fix it if it is affected.\n\nWhat it is: CVE-2020-37127 is a medium-severity memory corruption vulnerability in dnsmasq-utils, published on 5 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37127 exists.\n\nAffected product: dnsmasq-utils. 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-2020-37127/ (Markdown: https://insights.sbomify.com/CVE-2020-37127/index.md)","id":"CVE-2020-37127","markdown":"https://insights.sbomify.com/CVE-2020-37127/index.md","name":"CVE-2020-37127","record":{"aliases":["DEBIAN-CVE-2020-37127","GHSA-j2ph-f4fj-m4r3","UBUNTU-CVE-2020-37127","USN-8311-1"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"dnsmasq utilities","requires_auth":"none","summary":"Attackers can cause a denial of service in the dhcp_release utility by sending crafted input longer than 16 characters, triggering a buffer overflow and core dump.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to cause a denial of service by supplying excessive input. Attackers can trigger a core dump and terminate the dhcp_release process by sending a crafted input string longer than 16 characters.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service","id":"CVE-2020-37127","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"ZOC Terminal 7.25.5 - 'Script' Denial of Service","id":"CVE-2020-37128"},"packages":[],"prev":{"headline":"Free Desktop Clock x86 Venetian Blinds Zipper 3.0 - Unicode Stack Overflow (SEH)","id":"CVE-2020-37126"},"products":["dnsmasq-utils"],"published":"2026-02-05","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-05","vendors":["dnsmasq"]},"summary":"Attackers can cause a denial of service in the dhcp_release utility by sending crafted input longer than 16 characters, triggering a buffer overflow and core dump.","url":"https://insights.sbomify.com/CVE-2020-37127/"}