{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-40434 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-40434 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40434 is a high-severity vulnerability in Anviz CrossChex Standard, published on 17 Apr 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-2026-40434 and fix it if it is affected.\n\nWhat it is: CVE-2026-40434 is a high-severity vulnerability in Anviz CrossChex Standard, published on 17 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-40434 in the wild and no public exploit code.\n\nAffected product: Anviz CrossChex Standard. 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-2026-40434/ (Markdown: https://insights.sbomify.com/CVE-2026-40434/index.md)","id":"CVE-2026-40434","markdown":"https://insights.sbomify.com/CVE-2026-40434/index.md","name":"CVE-2026-40434","record":{"aliases":["GHSA-qg37-cwrh-945r"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["data_modify","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Access control system","requires_auth":"none","summary":"An attacker on the same network can inject TCP packets to alter or disrupt traffic in Anviz CrossChex Standard due to lack of source verification.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"icscert","cpe":[{"product":"crosschex_standard","vendor":"anviz"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-940","name":"Improper Verification of Source of a Communication Channel"}],"description":"Anviz CrossChex Standard\nlacks source verification in the client/server channel, enabling TCP \npacket injection by an attacker on the same network to alter or disrupt \napplication traffic.","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":"Anviz CrossChex Standard Improper Verification of Source of a Communication Channel","id":"CVE-2026-40434","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"BIG-IP httpd access control vulnerability","id":"CVE-2026-40435"},"packages":[],"prev":{"headline":"SenseLive X3050 Cleartext transmission of sensitive information","id":"CVE-2026-40431"},"products":["Anviz CrossChex Standard"],"published":"2026-04-17","related":[{"cvss_score":7.5,"headline":"Anviz CrossChex Standard Algorithm Downgrade","id":"CVE-2026-32650","kev_date_added":null,"published":"2026-04-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"2026-04-17","vendors":["Anviz"]},"summary":"An attacker on the same network can inject TCP packets to alter or disrupt traffic in Anviz CrossChex Standard due to lack of source verification.","url":"https://insights.sbomify.com/CVE-2026-40434/"}