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

26 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Bucle con condición de salida inalcanzable (’bucle infinito’) en ASP.NET Core permite a un atacante no autorizado denegar el servicio a través de una red.

Information

Published : 2026-05-12 18:17

Updated : 2026-10-26 18:10

NVD link : CVE-2026-42899

Mitre link : CVE-2026-42899

CVE.ORG link : CVE-2026-42899

JSON object : View

Products Affected

linux

linux_kernel

apple

macos

microsoft

.net
windows

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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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."}, {"lang": "es", "value": "Bucle con condici\u00f3n de salida inalcanzable (\u2019bucle infinito\u2019) en ASP.NET Core permite a un atacante no autorizado denegar el servicio a trav\u00e9s de una red."}], "lastModified": "2026-10-26T18:10:00.173", "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": 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