CVE-2021-43118

View on CVE.org

Published Mar 29, 2022 CVSS 3.1 · 9.8 Critical EPSS 34.8% KEV · Not listed

Description

A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:draytek:vigor2960_firmware:1.5.1.3:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:draytek:vigor3900_firmware:1.5.1.3:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor3900:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.3:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 34.8% (34.845% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26

History

No history.

Subscriptions

Draytek Vigor2960 Vigor2960 Firmware Vigor300b Vigor300b Firmware Vigor3900 Vigor3900 Firmware

Weaknesses

CWE-77

Sources

CVE record Updated: Aug 4, 2024, 3:47 AM

Status: PUBLISHED
Assigner: mitre
Published: Mar 29, 2022, 7:37 PM
Updated: Aug 4, 2024, 3:47 AM
Reserved: Nov 1, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:10 AM

Status: Modified
Published: Mar 29, 2022, 8:15 PM
Modified: Jun 17, 2026, 4:10 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-03-29T19:37:57.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-43118", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26", "refsource": "MISC", "url": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:47:13.571Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-43118", "datePublished": "2022-03-29T19:37:57.000Z", "dateReserved": "2021-11-01T00:00:00.000Z", "dateUpdated": "2024-08-04T03:47:13.571Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor2960_firmware:1.5.1.3:*:*:*:*:*:*:*", "matchCriteriaId": "4BBC1422-14DF-4E2F-9384-51734EE980F2", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*", "matchCriteriaId": "8FDA3905-67DD-4F31-AFCF-014F1D7CCC1F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor3900_firmware:1.5.1.3:*:*:*:*:*:*:*", "matchCriteriaId": "467D1536-4AB7-47D8-8880-60391A68A457", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor3900:-:*:*:*:*:*:*:*", "matchCriteriaId": "FEECFBBC-5551-4135-9194-4216A39B04B9", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.3:*:*:*:*:*:*:*", "matchCriteriaId": "559C0B6C-9C54-452E-AE7B-2CDE31B0057B", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*", "matchCriteriaId": "DA5B988D-ED1A-4CBF-8B34-C5B03A55ED52", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de Inyecci\u00f3n de Comando Remoto en DrayTek Vigor 2960 versi\u00f3n 1.5.1.3, DrayTek Vigor 3900 versi\u00f3n 1.5.1.3, y DrayTek Vigor 300B versi\u00f3n 1.5.1.3, por medio de un mensaje HTTP dise\u00f1ado que contiene una cadena de consulta malformada en el archivo mainfunction.cgi, que podr\u00eda permitir a un usuario remoto malicioso ejecutar c\u00f3digo arbitrario"}], "id": "CVE-2021-43118", "lastModified": "2026-06-17T04:10:32.177", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-03-29T20:15:07.733", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "nvd@nist.gov", "type": "Primary"}]}