CVE-2026-69522 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

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 Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Microsoft	.net .net Framework Visual Studio 2022 Visual Studio 2026

No data.

No data.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69522

History

Tue, 08 Sep 2026 20:30:00 +0000

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

Tue, 08 Sep 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Title		.NET and Visual Studio Remote Code Execution Vulnerability
First Time appeared		Microsoft Microsoft .net Microsoft .net Framework Microsoft visual Studio 2022 Microsoft visual Studio 2026
Weaknesses		CWE-122
CPEs		cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:a:microsoft:.net_framework:::::::: cpe:2.3:a:microsoft:visual_studio_2022:::::::: cpe:2.3:a:microsoft:visual_studio_2026::::::::
Vendors & Products		Microsoft Microsoft .net Microsoft .net Framework Microsoft visual Studio 2022 Microsoft visual Studio 2026
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69522
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-09-08T17:10:32.415Z

Updated: 2026-09-09T21:27:34.328Z

Reserved: 2026-08-03T21:09:40.782Z

Link: CVE-2026-69522

Vulnrichment

Updated: 2026-09-08T19:00:03.828Z

NVD

Status : Undergoing Analysis

Published: 2026-09-08T18:19:19.697

Modified: 2026-09-09T04:18:56.650

Link: CVE-2026-69522

Redhat

No data.

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"4.8.1", "versionType": "custom"}]}, {"platforms": ["Windows Server 2012", "Windows Server 2012 R2"], "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "vendor": "Microsoft", "versions": [{"lessThan": "4.7.4145.0", "status": "affected", "version": "4.7.0", "versionType": "custom"}]}, {"platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 R2", "Windows Server 2016"], "product": "Microsoft .NET Framework 4.8", "vendor": "Microsoft", "versions": [{"lessThan": "4.8.4806.0", "status": "affected", "version": "4.8.0", "versionType": "custom"}]}, {"platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems"], "product": "Microsoft .NET Framework 4.8.1", "vendor": "Microsoft", "versions": [{"lessThan": "4.8.9347.0", "status": "affected", "version": "4.8.0.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2022 version 17.14", "vendor": "Microsoft", "versions": [{"lessThan": "17.14.40", "status": "affected", "version": "17.14.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2026 version 18.9", "vendor": "Microsoft", "versions": [{"lessThan": "18.9.3", "status": "affected", "version": "18.9.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network."}], "id": "CVE-2026-69522", "lastModified": "2026-09-09T04:18:56.650", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-69522", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-03T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-09-08T18:19:19.697", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69522"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "secure@microsoft.com", "type": "Secondary"}]}