CVE-2026-62909

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.1 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:visual_studio_2022::::::::
	cpe:2.3:a:microsoft:visual_studio_2026::::::::

Configuration 2 (hide)

AND

OR	cpe:2.3:a:microsoft:.net::::::::
	cpe:2.3:a:microsoft:.net::::::::
	cpe:2.3:a:microsoft:.net::::::::

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

14 Aug 2026, 13:51

Type	Values Removed	Values Added
CPE		cpe:2.3:o:apple:macos:-:::::::* cpe:2.3:a:microsoft:visual_studio_2022:::::::: cpe:2.3:a:microsoft:visual_studio_2026:::::::: cpe:2.3:o:microsoft:windows:-:::::::* cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:o:linux:linux_kernel:-:::::::*
First Time		Apple macos Microsoft visual Studio 2022 Linux Apple Linux linux Kernel Microsoft windows Microsoft visual Studio 2026 Microsoft Microsoft .net
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909 - Patch, Vendor Advisory

11 Aug 2026, 19:18

Type	Values Removed	Values Added
CWE	~~CWE-248~~	CWE-252

11 Aug 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-08-11 17:18

Updated : 2026-08-14 13:51

NVD link : CVE-2026-62909

Mitre link : CVE-2026-62909

CVE.ORG link : CVE-2026-62909

JSON object : View

Products Affected

microsoft

windows
.net
visual_studio_2026
visual_studio_2022

linux

linux_kernel

apple

macos

CWE

CWE-252

Unchecked Return Value

{"id": "CVE-2026-62909", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62909", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-12T03:55:32.907064Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.1}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": ".NET 10.0", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.11", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.30", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.19", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"status": "affected", "version": "17.14.0", "lessThan": "17.14.38", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.8", "versions": [{"status": "affected", "version": "18.0", "lessThan": "18.8.3", "versionType": "custom"}]}]}], "published": "2026-08-11T17:18:44.817", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-252"}]}], "descriptions": [{"lang": "en", "value": "Uncaught exception in .NET allows an authorized attacker to elevate privileges locally."}], "lastModified": "2026-08-14T13:51:15.423", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CBE12A5C-0A6F-48FC-B80E-F3BD5137713B", "versionEndExcluding": "17.14.38", "versionStartIncluding": "17.14.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "276EE4F3-18B2-4458-B4E7-3A5C8C675034", "versionEndExcluding": "18.8.3", "versionStartIncluding": "18.8.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D718FBC4-01E2-45E7-86B8-6E908C435EAA", "versionEndExcluding": "8.0.30", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF0C1D09-877C-4EFB-A035-4C307503457C", "versionEndExcluding": "9.0.19", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A84629EB-2E2D-4667-A820-135DE130A767", "versionEndExcluding": "10.0.11", "versionStartIncluding": "10.0.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "secure@microsoft.com"}