CVE-2021-21799

View on CVE.org

Published Jul 16, 2021 CVSS 3.1 · 6.1 Medium EPSS 12.3% KEV · Not listed

Description

Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user’s browser. An attacker can provide a crafted URL to trigger this vulnerability.

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

Advantech

affected

Version	Status	Constraints
`Advantech R-SeeNet 2.4.12 (20.10.2020)`	affected	—

Configuration 1 [-]

cpe:2.3:a:advantech:r-seenet:2.4.12:*:*:*:*:*:*:*

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 Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 12.3% (12.293% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270

History

No history.

Subscriptions

Advantech R-seenet

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 3, 2024, 6:23 PM

Status: PUBLISHED
Assigner: talos
Published: Jul 16, 2021, 10:33 AM
Updated: Aug 3, 2024, 6:23 PM
Reserved: Jan 4, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:36 AM

Status: Modified
Published: Jul 16, 2021, 11:15 AM
Modified: Jun 17, 2026, 3:36 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "Advantech", "vendor": "n/a", "versions": [{"status": "affected", "version": "Advantech R-SeeNet 2.4.12 (20.10.2020)"}]}], "descriptions": [{"lang": "en", "value": "Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user\u2019s browser. An attacker can provide a crafted URL to trigger this vulnerability."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-07-16T10:33:51.000Z", "orgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b", "shortName": "talos"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "talos-cna@cisco.com", "ID": "CVE-2021-21799", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Advantech", "version": {"version_data": [{"version_value": "Advantech R-SeeNet 2.4.12 (20.10.2020)"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user\u2019s browser. An attacker can provide a crafted URL to trigger this vulnerability."}]}, "impact": {"cvss": {"baseScore": 9.6, "baseSeverity": "Critical", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}]}, "references": {"reference_data": [{"name": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270", "refsource": "MISC", "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:23:29.559Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270"}]}]}, "cveMetadata": {"assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b", "assignerShortName": "talos", "cveId": "CVE-2021-21799", "datePublished": "2021-07-16T10:33:51.000Z", "dateReserved": "2021-01-04T00:00:00.000Z", "dateUpdated": "2024-08-03T18:23:29.559Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "Advantech", "vendor": "n/a", "versions": [{"status": "affected", "version": "Advantech R-SeeNet 2.4.12 (20.10.2020)"}]}], "source": "talos-cna@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:advantech:r-seenet:2.4.12:*:*:*:*:*:*:*", "matchCriteriaId": "4ADAF570-3C51-4BA2-B0FC-FF31609CE6FE", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user\u2019s browser. An attacker can provide a crafted URL to trigger this vulnerability."}, {"lang": "es", "value": "Se presentan vulnerabilidades de tipo Cross-site scripting en la funcionalidad script del archivo telnet_form.php de Advantech R-SeeNet versi\u00f3n v 2.4.12 (20.10.2020). Si un usuario visita una URL especialmente dise\u00f1ada, puede conllevar a una ejecuci\u00f3n de c\u00f3digo JavaScript arbitrario en el contexto del navegador del usuario objetivo. Un atacante puede proporcionar una URL dise\u00f1ada para desencadenar esta vulnerabilidad"}], "id": "CVE-2021-21799", "lastModified": "2026-06-17T03:36:08.393", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 6.0, "source": "talos-cna@cisco.com", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-16T11:15:09.613", "references": [{"source": "talos-cna@cisco.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1270"}], "sourceIdentifier": "talos-cna@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "talos-cna@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}