Details of VAR-202606-4111

ID

VAR-202606-4111

CVE

CVE-2026-45591

TITLE

Microsoft's .NET Vulnerabilities related to resource exhaustion in multiple products, including

Trust: 0.8

sources: JVNDB: JVNDB-2026-020668

DESCRIPTION

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network. - No information handled by the software will be rewritten. - The software may completely shut down

Trust: 1.62

sources: NVD: CVE-2026-45591 // JVNDB: JVNDB-2026-020668

AFFECTED PRODUCTS

vendor:	microsoft	model:	asp.net core	scope:	gte	version:	9.0.0	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	lt	version:	10.0.9	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	lt	version:	8.0.28	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	gte	version:	9.0.0	Trust: 1.0
vendor:	microsoft	model:	visual studio 2026	scope:	lt	version:	18.6.3	Trust: 1.0
vendor:	microsoft	model:	asp.net core	scope:	lt	version:	9.0.17	Trust: 1.0
vendor:	microsoft	model:	visual studio 2026	scope:	gte	version:	18.6.0	Trust: 1.0
vendor:	microsoft	model:	asp.net core	scope:	lt	version:	10.0.9	Trust: 1.0
vendor:	microsoft	model:	asp.net core	scope:	gte	version:	8.0.0	Trust: 1.0
vendor:	microsoft	model:	asp.net core	scope:	lt	version:	8.0.28	Trust: 1.0
vendor:	microsoft	model:	asp.net core	scope:	gte	version:	10.0.0	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	gte	version:	10.0.0	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	gte	version:	8.0.0	Trust: 1.0
vendor:	microsoft	model:	.net	scope:	lt	version:	9.0.17	Trust: 1.0
vendor:	マイクロソフト	model:	asp.net core	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft visual studio 2026	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	.net	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2026-020668 // NVD: CVE-2026-45591

CVSS

SEVERITY

CVSSV2

CVSSV3

secure@microsoft.com:	CVE-2026-45591
value:	HIGH
Trust: 1.0
0b0ca135-0b70-47e7-9f44-1890c2a1c46c:	CVE-2026-45591
value:	HIGH
Trust: 1.0
OTHER:	JVNDB-2026-020668
value:	HIGH
Trust: 0.8

secure@microsoft.com:	CVE-2026-45591
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 2.0
OTHER:	JVNDB-2026-020668
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2026-020668 // NVD: CVE-2026-45591 // NVD: CVE-2026-45591

PROBLEMTYPE DATA

problemtype:	CWE-400	Trust: 1.0
problemtype:	CWE-770	Trust: 1.0
problemtype:	NVD-CWE-noinfo	Trust: 1.0
problemtype:	Resource exhaustion (CWE-400) [ others ]	Trust: 0.8
problemtype:	Lack of information (CWE-noinfo) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2026-020668 // NVD: CVE-2026-45591

PATCH

title:

CVE-2026-45591 - Security updates guide - Microsoft - ASP.NET Core Service Denial Vulnerability

url:

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591

Trust: 0.8

sources: JVNDB: JVNDB-2026-020668

EXTERNAL IDS

db:	NVD	id:	CVE-2026-45591	Trust: 2.6
db:	JVNDB	id:	JVNDB-2026-020668	Trust: 0.8

sources: JVNDB: JVNDB-2026-020668 // NVD: CVE-2026-45591

REFERENCES

url:	https://access.redhat.com/errata/rhsa-2026:28051	Trust: 1.0
url:	https://bugzilla.redhat.com/show_bug.cgi?id=2487224	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25111	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25222	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:26638	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25221	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25112	Trust: 1.0
url:	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45591.json	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:28007	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:28009	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25110	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25115	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25113	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:26994	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:28227	Trust: 1.0
url:	https://msrc.microsoft.com/update-guide/vulnerability/cve-2026-45591	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25220	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:28011	Trust: 1.0
url:	https://access.redhat.com/security/cve/cve-2026-45591	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:17527	Trust: 1.0
url:	https://access.redhat.com/errata/rhsa-2026:25114	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2026-45591	Trust: 0.8

sources: JVNDB: JVNDB-2026-020668 // NVD: CVE-2026-45591

SOURCES

db:	JVNDB	id:	JVNDB-2026-020668
db:	NVD	id:	CVE-2026-45591

LAST UPDATE DATE

2026-07-15T19:48:13.648000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2026-020668	date:	2026-06-22T02:56:00
db:	NVD	id:	CVE-2026-45591	date:	2026-07-15T02:22:04.970

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2026-020668	date:	2026-06-22T00:00:00
db:	NVD	id:	CVE-2026-45591	date:	2026-06-09T17:17:26.933