{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47719 exists.","fix":"No fix has been published for CVE-2021-47719 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47719 is a high-severity memory corruption vulnerability in COMMAX WebViewer ActiveX Control, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-47719 and fix it if it is affected.\n\nWhat it is: CVE-2021-47719 is a high-severity memory corruption vulnerability in COMMAX WebViewer ActiveX Control, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47719 exists.\n\nAffected product: COMMAX WebViewer ActiveX Control. 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-2021-47719/ (Markdown: https://insights.sbomify.com/CVE-2021-47719/index.md)","id":"CVE-2021-47719","markdown":"https://insights.sbomify.com/CVE-2021-47719/index.md","name":"CVE-2021-47719","record":{"aliases":["GHSA-frh6-7cwp-hqh4"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"COMMAX WebViewer ActiveX","requires_auth":"none","summary":"Attackers can execute arbitrary code via buffer overflow in COMMAX WebViewer ActiveX Control by providing excessively long string arrays.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"COMMAX WebViewer ActiveX Control 2.1.4.5 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by providing excessively long string arrays through multiple functions. Attackers can exploit boundary errors in Commax_WebViewer.ocx to cause buffer overflow conditions and potentially gain code execution.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"CNC_Ctrl DllUnregisterServer f5501 Access Violation","id":"CVE-2021-47719","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Orangescrum 1.8.0 Authenticated SQL Injection via Multiple Parameters","id":"CVE-2021-47720"},"packages":[],"prev":{"headline":"OpenBMCS Directory Listing Information Disclosure","id":"CVE-2021-47718"},"products":["COMMAX WebViewer ActiveX Control"],"published":"2025-12-09","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":"total"},"state":"PUBLISHED","updated":"2026-04-07","vendors":["COMMAX Co., Ltd."]},"summary":"Attackers can execute arbitrary code via buffer overflow in COMMAX WebViewer ActiveX Control by providing excessively long string arrays.","url":"https://insights.sbomify.com/CVE-2021-47719/"}