CVE-2021-26437 - Vulnerability Details - OpenCVE

Description

Visual Studio Code Spoofing Vulnerability

Published: 2021-09-15

Score: 5.5 Medium

EPSS: 2.3% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

Vendor Product Default status Versions

Microsoft

Visual Studio Code

affected

Version	Status	Constraints
`1.0.0`	affected	< 1.59.1

Configuration 1 [-]

cpe:2.3:a:microsoft:visual_studio_code:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-13242	Visual Studio Code Spoofing Vulnerability

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

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.

The EPSS score is 0.02307.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26437
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26437

History

Mon, 10 Aug 2026 15:30:00 +0000

Type	Values Removed	Values Added
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26437

Tue, 01 Oct 2024 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Microsoft Visual Studio Code

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2021-09-15T11:23:03.000Z

Updated: 2026-08-10T15:10:56.626Z

Reserved: 2021-01-29T00:00:00.000Z

Link: CVE-2021-26437

Vulnrichment

Updated: 2024-08-03T20:26:25.250Z

NVD

Status : Modified

Published: 2021-09-15T12:15:09.253

Modified: 2026-08-10T16:17:34.690

Link: CVE-2021-26437

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

{"containers": {"cna": {"title": "Visual Studio Code Spoofing Vulnerability", "datePublic": "2021-09-14T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_code:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.0.0", "versionEndExcluding": "1.59.1"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Visual Studio Code", "versions": [{"version": "1.0.0", "lessThan": "1.59.1", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Visual Studio Code Spoofing Vulnerability", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "Spoofing", "lang": "en-US", "type": "Impact"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-10T15:10:56.626Z"}, "references": [{"name": "Visual Studio Code Spoofing Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26437"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:26:25.250Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26437"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-02-26T21:01:11.769093Z", "id": "CVE-2021-26437", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-01T15:52:57.465Z"}}]}, "cveMetadata": {"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "assignerShortName": "microsoft", "cveId": "CVE-2021-26437", "datePublished": "2021-09-15T11:23:03.000Z", "dateReserved": "2021-01-29T00:00:00.000Z", "dateUpdated": "2026-08-10T15:10:56.626Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26437", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:26:25.250Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-26437", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-02-26T21:01:11.769093Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-01T15:45:21.590Z"}}], "cna": {"title": "Visual Studio Code Spoofing Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 5.5, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": "Visual Studio Code", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.59.1", "versionType": "custom"}]}], "datePublic": "2021-09-14T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26437", "name": "Visual Studio Code Spoofing Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Visual Studio Code Spoofing Vulnerability"}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "Impact", "description": "Spoofing"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_code:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.59.1", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-10T15:10:56.626Z"}}}, "cveMetadata": {"cveId": "CVE-2021-26437", "state": "PUBLISHED", "dateUpdated": "2026-08-10T15:10:56.626Z", "dateReserved": "2021-01-29T00:00:00.000Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2021-09-15T11:23:03.000Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "Visual Studio Code", "vendor": "Microsoft", "versions": [{"lessThan": "1.59.1", "status": "affected", "version": "1.0.0", "versionType": "custom"}]}], "source": "[email protected]"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_code:-:*:*:*:*:*:*:*", "matchCriteriaId": "8FF33086-D7CC-44D1-A347-9F3EB50F74A0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Visual Studio Code Spoofing Vulnerability"}, {"lang": "es", "value": "Una Vulnerabilidad de Falsificaci\u00f3n de C\u00f3digo de Visual Studio"}], "id": "CVE-2021-26437", "lastModified": "2026-08-10T16:17:34.690", "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": "[email protected]", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-26437", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-02-26T21:01:11.769093Z", "version": "2.0.3"}}]}, "published": "2021-09-15T12:15:09.253", "references": [{"source": "[email protected]", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26437"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26437"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "[email protected]", "type": "Primary"}]}