CVE-2021-38389

Advantech WebAccess

View on CVE.org

Published Oct 18, 2021 CVSS 3.1 · 9.8 Critical EPSS 10.4% KEV · Not listed

Description

Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute 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

Advantech

WebAccess

affected

Version	Status	Constraints
`All`	affected	≤ 9.02

Configuration 1 [-]

cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

Advantech has released Version 9.1.1 to address the stack-based buffer overflow vulnerability.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-24841	Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.

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: 10.4% (10.367% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02

History

No history.

Subscriptions

Advantech Webaccess

Weaknesses

Sources

CVE record Updated: Sep 16, 2024, 10:24 PM

Status: PUBLISHED
Assigner: icscert
Published: Oct 18, 2021, 12:41 PM
Updated: Sep 16, 2024, 10:24 PM
Reserved: Aug 10, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:02 AM

Status: Modified
Published: Oct 18, 2021, 1:15 PM
Modified: Jun 17, 2026, 4:02 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "WebAccess", "vendor": "Advantech", "versions": [{"lessThanOrEqual": "9.02", "status": "affected", "version": "All", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Natnael Samson, @NattiSamson, working with Trend Micro\u2019s Zero Day Initiative, reported these vulnerabilities to CISA."}], "datePublic": "2021-10-12T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code."}], "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"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-121", "description": "STACK-BASED BUFFER OVERFLOW CWE-121", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-10-18T12:41:14.000Z", "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}], "solutions": [{"lang": "en", "value": "Advantech has released Version 9.1.1 to address the stack-based buffer overflow vulnerability."}], "source": {"advisory": "ICSA-21-285-02", "discovery": "UNKNOWN"}, "title": "Advantech WebAccess", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "ics-cert@hq.dhs.gov", "DATE_PUBLIC": "2021-10-12T19:15:00.000Z", "ID": "CVE-2021-38389", "STATE": "PUBLIC", "TITLE": "Advantech WebAccess"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "WebAccess", "version": {"version_data": [{"version_affected": "<=", "version_name": "All", "version_value": "9.02"}]}}]}, "vendor_name": "Advantech"}]}}, "credit": [{"lang": "eng", "value": "Natnael Samson, @NattiSamson, working with Trend Micro\u2019s Zero Day Initiative, reported these vulnerabilities to CISA."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"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"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "STACK-BASED BUFFER OVERFLOW CWE-121"}]}]}, "references": {"reference_data": [{"name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}]}, "solution": [{"lang": "en", "value": "Advantech has released Version 9.1.1 to address the stack-based buffer overflow vulnerability."}], "source": {"advisory": "ICSA-21-285-02", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:37:16.503Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}]}]}, "cveMetadata": {"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "assignerShortName": "icscert", "cveId": "CVE-2021-38389", "datePublished": "2021-10-18T12:41:14.173Z", "dateReserved": "2021-08-10T00:00:00.000Z", "dateUpdated": "2024-09-16T22:24:38.131Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "WebAccess", "vendor": "Advantech", "versions": [{"lessThanOrEqual": "9.02", "status": "affected", "version": "All", "versionType": "custom"}]}], "source": "ics-cert@hq.dhs.gov"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*", "matchCriteriaId": "800E1EAB-1270-42C2-BECE-7110B4D3E9E2", "versionEndIncluding": "9.0.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code."}, {"lang": "es", "value": "Advantech WebAccess versiones 9.02 y anteriores, son vulnerables a un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria, que podr\u00eda permitir a un atacante ejecutar c\u00f3digo de forma remota"}], "id": "CVE-2021-38389", "lastModified": "2026-06-17T04:02:00.367", "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": "ics-cert@hq.dhs.gov", "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": "2021-10-18T13:15:09.507", "references": [{"source": "ics-cert@hq.dhs.gov", "tags": ["Mitigation", "Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}