{"id":"CVE-2021-4105","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-4105","generatedAt":"2026-10-27T21:09:57.832Z","title":"Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code Inclusion.","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.","published":"2023-02-24T12:15:30.000Z","lastModified":"2026-06-17T04:19:03.000Z","status":"Modified","sourceIdentifier":"iletisim@usom.gov.tr","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-755"],"affected":["bg-tek/coslat bx5s1d3 firmware","bg-tek/coslat bx5s1d4 firmware","bg-tek/coslat bx5s1d5 firmware","bg-tek/coslat rm1ds1000 firmware","bg-tek/coslat rm2ds2000 firmware","bg-tek/coslat rm2s200 firmware","bg-tek/coslat rm3s300 firmware","bg-tek/coslat rm4s500 firmware"],"epss":{"score":0.00865,"percentile":0.58391,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.86%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html","tags":["Vendor Advisory"],"source":"iletisim@usom.gov.tr"},{"url":"https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0108","source":"iletisim@usom.gov.tr"},{"url":"https://www.usom.gov.tr/bildirim/tr-23-0108","tags":["Third Party Advisory"],"source":"iletisim@usom.gov.tr"},{"url":"http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.usom.gov.tr/bildirim/tr-23-0108","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-4105","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}