{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-45557 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-45557 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-45557 is a medium-severity denial of service vulnerability in Technitium DNS Server, published on 19 May 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-2026-45557 and fix it if it is affected.\n\nWhat it is: CVE-2026-45557 is a medium-severity denial of service vulnerability in Technitium DNS Server, published on 19 May 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-2026-45557 in the wild and no public exploit code.\n\nAffected product: Technitium DNS Server. 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-2026-45557/ (Markdown: https://insights.sbomify.com/CVE-2026-45557/index.md)","id":"CVE-2026-45557","markdown":"https://insights.sbomify.com/CVE-2026-45557/index.md","name":"CVE-2026-45557","record":{"aliases":["GHSA-vpfg-gc96-vg45"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS server","requires_auth":"none","summary":"An attacker controlling a domain can cause excessive network traffic and resource exhaustion in Technitium DNS Server by triggering aggressive DNSSEC record fetches.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisa-cg","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-406","name":"Insufficient Control of Network Message Volume (Network Amplification)"},{"id":"CWE-405","name":"Asymmetric Resource Consumption (Amplification)"}],"description":"Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network traffic. Fixed in 15.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Technitium DNS Server excessive DNSSEC requests","id":"CVE-2026-45557","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save","id":"CVE-2026-45558"},"packages":[],"prev":{"headline":"Path traversal in roxy-wi","id":"CVE-2026-45556"},"products":["DNS Server"],"published":"2026-05-19","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-19","vendors":["Technitium"]},"summary":"An attacker controlling a domain can cause excessive network traffic and resource exhaustion in Technitium DNS Server by triggering aggressive DNSSEC record fetches.","url":"https://insights.sbomify.com/CVE-2026-45557/"}