CVE-2021-4105
Unauthenticated Remote Code Execution on COSLAT Firewall
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Unauthenticated Remote Code Execution on COSLAT Firewall
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.
- Record
CVE-2021-4105- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
EUVDEUVD-2021-33988
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.
- Record
EUVD-2021-33988- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-gr7g-5rvj-cf96
Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code...
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.
- Record
GHSA-gr7g-5rvj-cf96- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-4105- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-4105 is a critical vulnerability (CVSS 9.8) in Bg-tek Coslat Firewall, published February 24, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. No source names a fixed version.