CVE-2021-4105 (GCVE-0-2021-4105)
Vulnerability from cvelistv5 – Published: 2023-02-24 11:09 – Updated: 2026-05-18 12:08
VLAI
EPSS
VEX
Title
Unauthenticated Remote Code Execution on COSLAT Firewall
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.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-11 15:46 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
3 references
| URL | Tags |
|---|---|
| http://blog.coslat.com/2021/07/onemli-kritik-gunc… | vendor-advisory |
| https://www.usom.gov.tr/bildirim/tr-23-0108 | government-resourcebroken-link |
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| BG-TEK | COSLAT Firewall |
Affected:
5.24.0.r.20180630 , < 5.24.0.r.20210727
(custom)
|
guessed |
Date Public
2023-02-24 11:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T17:16:04.180Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"tags": [
"government-resource",
"x_transferred"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-4105",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-03-11T15:46:22.107439Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-03-11T15:46:27.196Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "COSLAT Firewall",
"vendor": "BG-TEK",
"versions": [
{
"lessThan": "5.24.0.r.20210727",
"status": "affected",
"version": "5.24.0.r.20180630",
"versionType": "custom"
}
]
}
],
"datePublic": "2023-02-24T11:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code Inclusion.\u003cp\u003eThis issue affects COSLAT Firewall: from 5.24.0.R.20180630 before 5.24.0.R.20210727.\u003c/p\u003e"
}
],
"value": "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."
}
],
"impacts": [
{
"capecId": "CAPEC-253",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-253 Remote Code Inclusion"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-755",
"description": "CWE-755 Improper Handling of Exceptional Conditions",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-18T12:08:00.909Z",
"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"shortName": "TR-CERT"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"tags": [
"government-resource",
"broken-link"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
},
{
"tags": [
"government-resource"
],
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0108"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update the version to \u0026gt;=\n\n5.24.0.r.20210727"
}
],
"value": "Update the version to \u003e=\n\n5.24.0.r.20210727"
}
],
"source": {
"advisory": "TR-23-0108",
"defect": [
"TR-23-0108"
],
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2021-07-26T21:00:00.000Z",
"value": "Vendor patched the vulnerability."
}
],
"title": "Unauthenticated Remote Code Execution on COSLAT Firewall",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"assignerShortName": "TR-CERT",
"cveId": "CVE-2021-4105",
"datePublished": "2023-02-24T11:09:46.710Z",
"dateReserved": "2021-12-13T12:15:35.293Z",
"dateUpdated": "2026-05-18T12:08:00.909Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-4105",
"date": "2026-09-28",
"epss": "0.00872",
"percentile": "0.57264"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d3_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C839CDB1-D5E8-4F19-82C8-CE6629118278",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2850DC15-4B6F-4E79-B028-9FD2CF455078",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d4_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DDA8A01B-9A69-420A-A128-7E4FA316940D",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d4:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2F47FA7F-7151-4372-AB77-B5D30A008757",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d5_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C655BF89-788B-4353-93CB-2D73EE6B0E91",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d5:-:*:*:*:*:*:*:*",
"matchCriteriaId": "78099EBC-BFBE-4A6B-A97F-9EAF26E611A7",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm1ds1000_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "806727A2-456B-4A12-9CD2-354358309892",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm1ds1000:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BD474143-126B-4097-8B4A-66DF562ACADB",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm2ds2000_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2014519C-53FB-4429-B8EB-3E2F13735567",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm2ds2000:-:*:*:*:*:*:*:*",
"matchCriteriaId": "5566AD59-5CCA-41B1-8B30-3BD70EDEFB9F",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm2s200_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "41162D57-35D5-42CA-A8BE-833785A3C6D7",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm2s200:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9FD17E3F-7692-45B5-B87A-7B8783413A95",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm3s300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FD855956-B215-4104-86C8-9E5768F48B53",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm3s300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6987EFB5-6CBB-423D-A660-7EBAB2BE0E24",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm4s500_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CB92D173-E495-443B-915B-D5060A80BB47",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm4s500:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9EA26FE5-27A7-48D5-83A2-F972F0EC9975",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"descriptions": [
{
"lang": "en",
"value": "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.\n\n"
}
],
"id": "CVE-2021-4105",
"lastModified": "2024-11-21T06:36:54.813",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2023-02-24T12:15:30.127",
"references": [
{
"source": "iletisim@usom.gov.tr",
"tags": [
"Vendor Advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"source": "iletisim@usom.gov.tr",
"tags": [
"Third Party Advisory"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
}
],
"sourceIdentifier": "iletisim@usom.gov.tr",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-755"
}
],
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "COSLAT Firewall",
"vendor": "BG-TEK",
"versions": [
{
"lessThan": "5.24.0.r.20210727",
"status": "affected",
"version": "5.24.0.r.20180630",
"versionType": "custom"
}
]
}
],
"source": "iletisim@usom.gov.tr"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d3_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C839CDB1-D5E8-4F19-82C8-CE6629118278",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2850DC15-4B6F-4E79-B028-9FD2CF455078",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d4_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DDA8A01B-9A69-420A-A128-7E4FA316940D",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d4:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2F47FA7F-7151-4372-AB77-B5D30A008757",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_bx5s1d5_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C655BF89-788B-4353-93CB-2D73EE6B0E91",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_bx5s1d5:-:*:*:*:*:*:*:*",
"matchCriteriaId": "78099EBC-BFBE-4A6B-A97F-9EAF26E611A7",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm1ds1000_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "806727A2-456B-4A12-9CD2-354358309892",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm1ds1000:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BD474143-126B-4097-8B4A-66DF562ACADB",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm2ds2000_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2014519C-53FB-4429-B8EB-3E2F13735567",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm2ds2000:-:*:*:*:*:*:*:*",
"matchCriteriaId": "5566AD59-5CCA-41B1-8B30-3BD70EDEFB9F",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm2s200_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "41162D57-35D5-42CA-A8BE-833785A3C6D7",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm2s200:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9FD17E3F-7692-45B5-B87A-7B8783413A95",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm3s300_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FD855956-B215-4104-86C8-9E5768F48B53",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm3s300:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6987EFB5-6CBB-423D-A660-7EBAB2BE0E24",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:bg-tek:coslat_rm4s500_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CB92D173-E495-443B-915B-D5060A80BB47",
"versionEndExcluding": "5.24.0.r.20210727",
"versionStartIncluding": "5.24.0.r.20180630",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:bg-tek:coslat_rm4s500:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9EA26FE5-27A7-48D5-83A2-F972F0EC9975",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"id": "CVE-2021-4105",
"lastModified": "2026-06-17T04:19:02.697",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-4105",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-03-11T15:46:22.107439Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-02-24T12:15:30.127",
"references": [
{
"source": "iletisim@usom.gov.tr",
"tags": [
"Vendor Advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"source": "iletisim@usom.gov.tr",
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0108"
},
{
"source": "iletisim@usom.gov.tr",
"tags": [
"Third Party Advisory"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
}
],
"sourceIdentifier": "iletisim@usom.gov.tr",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-755"
}
],
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-05-18T13:58:01+00:00",
"cve": "CVE-2021-4105",
"id": "CVE-2021-4105",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Unauthenticated Remote Code Execution on COSLAT Firewall",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-4105.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T17:16:04.180Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"tags": [
"government-resource",
"x_transferred"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-4105",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-03-11T15:46:22.107439Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-03-11T15:46:03.236Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "COSLAT Firewall",
"vendor": "BG-TEK",
"versions": [
{
"lessThan": "5.24.0.r.20210727",
"status": "affected",
"version": "5.24.0.r.20180630",
"versionType": "custom"
}
]
}
],
"datePublic": "2023-02-24T11:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Handling of Parameters vulnerability in BG-TEK COSLAT Firewall allows Remote Code Inclusion.\u003cp\u003eThis issue affects COSLAT Firewall: from 5.24.0.R.20180630 before 5.24.0.R.20210727.\u003c/p\u003e"
}
],
"value": "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."
}
],
"impacts": [
{
"capecId": "CAPEC-253",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-253 Remote Code Inclusion"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-755",
"description": "CWE-755 Improper Handling of Exceptional Conditions",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-18T12:08:00.909Z",
"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"shortName": "TR-CERT"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "http://blog.coslat.com/2021/07/onemli-kritik-guncelleme-2021-07-27.html"
},
{
"tags": [
"government-resource",
"broken-link"
],
"url": "https://www.usom.gov.tr/bildirim/tr-23-0108"
},
{
"tags": [
"government-resource"
],
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0108"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update the version to \u0026gt;=\n\n5.24.0.r.20210727"
}
],
"value": "Update the version to \u003e=\n\n5.24.0.r.20210727"
}
],
"source": {
"advisory": "TR-23-0108",
"defect": [
"TR-23-0108"
],
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2021-07-26T21:00:00.000Z",
"value": "Vendor patched the vulnerability."
}
],
"title": "Unauthenticated Remote Code Execution on COSLAT Firewall",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"assignerShortName": "TR-CERT",
"cveId": "CVE-2021-4105",
"datePublished": "2023-02-24T11:09:46.710Z",
"dateReserved": "2021-12-13T12:15:35.293Z",
"dateUpdated": "2026-05-18T12:08:00.909Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…