{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2021-4105 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-4105 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-4105 is a critical code injection vulnerability in BG-TEK COSLAT Firewall, published on 24 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-4105 and fix it if it is affected.\n\nWhat it is: CVE-2021-4105 is a critical code injection vulnerability in BG-TEK COSLAT Firewall, published on 24 Feb 2023. 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-2021-4105 in the wild and no public exploit code.\n\nAffected product: BG-TEK COSLAT Firewall. 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-2021-4105/ (Markdown: https://insights.sbomify.com/CVE-2021-4105/index.md)","id":"CVE-2021-4105","markdown":"https://insights.sbomify.com/CVE-2021-4105/index.md","name":"CVE-2021-4105","record":{"aliases":["GHSA-gr7g-5rvj-cf96"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"COSLAT Firewall","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code on COSLAT Firewall devices due to improper parameter handling.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TR-CERT","cpe":[{"product":"coslat_bx5s1d3_firmware","vendor":"bg-tek"},{"product":"coslat_bx5s1d4_firmware","vendor":"bg-tek"},{"product":"coslat_bx5s1d5_firmware","vendor":"bg-tek"},{"product":"coslat_rm1ds1000_firmware","vendor":"bg-tek"},{"product":"coslat_rm2ds2000_firmware","vendor":"bg-tek"},{"product":"coslat_rm2s200_firmware","vendor":"bg-tek"},{"product":"coslat_rm3s300_firmware","vendor":"bg-tek"},{"product":"coslat_rm4s500_firmware","vendor":"bg-tek"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"}],"description":"Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code Inclusion.\n\nThis issue affects COSLAT Firewall: from 5.24.0.R.20180630 before 5.24.0.R.20210727.","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":"Unauthenticated Remote Code Execution on COSLAT Firewall","id":"CVE-2021-4105","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Vulnerability in Snow Inventory Java Scanner","id":"CVE-2021-4106"},"packages":[],"prev":{"headline":"Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2","id":"CVE-2021-4104"},"products":["COSLAT Firewall"],"published":"2023-02-24","related":[],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-18","vendors":["BG-TEK"]},"summary":"Unauthenticated attackers can execute arbitrary code on COSLAT Firewall devices due to improper parameter handling.","url":"https://insights.sbomify.com/CVE-2021-4105/"}