CVE-2026-45490
.NET SDK Elevation of Privilege Vulnerability
HIGH
7.8
CVSS Score
Published: June 9, 2026 at 05:04 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
2 products affected across 1 vendor.netWindows
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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.28, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.17, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Windows· Microsoftdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-45490Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2487184Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.jsonSSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-285CWE-863CWE-266
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