{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-19667 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-19667 is a high-severity vulnerability in ISC BIND 9, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-19667 and fix it if it is affected.\n\nWhat it is: CVE-2026-19667 is a high-severity vulnerability in ISC BIND 9, published on 16 Sep 2026. 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-2026-19667 in the wild and no public exploit code.\n\nAffected product: ISC BIND 9. 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-2026-19667/ (Markdown: https://insights.sbomify.com/CVE-2026-19667/index.md)","id":"CVE-2026-19667","markdown":"https://insights.sbomify.com/CVE-2026-19667/index.md","name":"CVE-2026-19667","record":{"aliases":["ALPINE-CVE-2026-19667","AZL-103329","BELL-CVE-2026-19667","CLSA-2026-1790352528","CLSA-2026-1790352942","DEBIAN-CVE-2026-19667","ECHO-4c4b-9dbe-7305","GHSA-m9xv-gf7q-4vjg","MINI-g768-rhj9-4c8m","MINI-j63x-vhxx-2763","MINI-vv8h-c5qq-cvjw","UBUNTU-CVE-2026-19667"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"BIND DNS server","requires_auth":"none","summary":"A remote attacker can cause a denial of service in BIND by triggering an assertion failure via a specific negative DNS response size.","user_interaction":"not_required","vuln_class":"integer_overflow"},"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-197","name":"Numeric Truncation Error"}],"description":"If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.","ecosystems":[],"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":"Remote assertion failure via 16-bit length truncation in `dns_ncache_add()`","id":"CVE-2026-19667","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching","id":"CVE-2026-19668"},"packages":[],"prev":{"headline":"Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path","id":"CVE-2026-19666"},"products":["BIND 9"],"published":"2026-09-16","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-17","vendors":["ISC"]},"summary":"A remote attacker can cause a denial of service in BIND by triggering an assertion failure via a specific negative DNS response size.","url":"https://insights.sbomify.com/CVE-2026-19667/"}