CVE-2026-42899

Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:17464
https://access.redhat.com/errata/RHSA-2026:17527
https://access.redhat.com/errata/RHSA-2026:17682
https://access.redhat.com/errata/RHSA-2026:21286
https://access.redhat.com/errata/RHSA-2026:21291
https://access.redhat.com/errata/RHSA-2026:21293
https://access.redhat.com/errata/RHSA-2026:21294
https://access.redhat.com/errata/RHSA-2026:21295
https://access.redhat.com/errata/RHSA-2026:21296
https://access.redhat.com/errata/RHSA-2026:21297
https://access.redhat.com/errata/RHSA-2026:21754
https://access.redhat.com/errata/RHSA-2026:22145
https://access.redhat.com/errata/RHSA-2026:24332
https://access.redhat.com/errata/RHSA-2026:24333
https://access.redhat.com/errata/RHSA-2026:24334
https://access.redhat.com/errata/RHSA-2026:24335
https://access.redhat.com/errata/RHSA-2026:24336
https://access.redhat.com/security/cve/CVE-2026-42899
https://bugzilla.redhat.com/show_bug.cgi?id=2476605
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42899.json

Configurations

Configuration 1 (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

No history.

Information

Published : 2026-05-12 18:17

Updated : 2026-07-15 02:21

NVD link : CVE-2026-42899

Mitre link : CVE-2026-42899

CVE.ORG link : CVE-2026-42899

JSON object : View

Products Affected

microsoft

windows
.net

linux

linux_kernel

apple

macos

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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["cpe:/a:redhat:rhel_e4s:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:8.0.127-1.el9_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "dotnet8.0", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:8.0.127-1.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "dotnet8.0", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:9.0.117-1.el9_6", "lessThan": "*", "versionType": "rpm"}], 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"https://access.redhat.com/errata/RHSA-2026:21293", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21294", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21295", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21296", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21297", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:21754", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:22145", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24332", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24333", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24334", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24335", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24336", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-42899", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2476605", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42899.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-835"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network."}], "lastModified": "2026-07-15T02:21:38.047", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "22FEE1A6-0E92-4E1A-B3C0-AD8DF6EE7B7B", "versionEndExcluding": "8.0.27", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F144BCB-8CEA-451A-9048-2A706EA67262", "versionEndExcluding": "9.0.16", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "480D562B-C22F-4227-B1F2-1DFA7E239DC7", "versionEndExcluding": "10.0.8", "versionStartIncluding": "10.0.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "vulnerable": false, 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