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High 7.8Published Jun 9, 2026
CVE-2026-45490.NET SDK Elevation of Privilege Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft .NET 10.0 and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-285, CWE-266
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Modified
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft .NET 10.0 microsoft:net_10.0 (from the name) | from 10.0.0 before 10.0.9 | CNA record |
Microsoft .NET 8.0 microsoft:net_8.0 (from the name) | from 8.0.0 before 8.0.28 | CNA record |
Microsoft .NET 9.0 microsoft:net_9.0 (from the name) | from 9.0.0 before 9.0.17 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | 1 | CISA ADP |
microsoft .net microsoft:.net | from 8.0.0 before 8.0.28; from 9.0.0 before 9.0.17; from 10.0.0 before 10.0.9 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490vendor-advisory, patch
- https://access.redhat.com/security/cve/CVE-2026-45490
- https://bugzilla.redhat.com/show_bug.cgi?id=2487184
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.