CRITICAL: CVE-2021-4105 (CVSS 9.8) — bg-tek coslat bx5s1d3 firmware

CVE: CVE-2021-4105

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

• bg-tek coslat bx5s1d3 firmware
• bg-tek coslat bx5s1d3
• bg-tek coslat bx5s1d4 firmware
• bg-tek coslat bx5s1d4
• bg-tek coslat bx5s1d5 firmware

Summary

Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code Inclusion.

This issue affects COSLAT Firewall: from 5.24.0.R.20180630 before 5.24.0.R.20210727.

Verified Sources

• NVD entry
• GitHub Advisory
• MITRE

References

• http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html
• https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0108
• https://www.usom.gov.tr/bildirim/tr-23-0108
• http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html
• https://www.usom.gov.tr/bildirim/tr-23-0108

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._