.NET SDK Elevation of Privilege Vulnerability (Microsoft .NET 10.0)

CVE-2026-45490

HIGH 7.8

At a glance

Source: NVD
EPSS: EPSS 0.38 % · percentile 32 (2026-10-29)
State: PUBLISHED
Published: 2026-06-09 17:04 UTC
Updated: 2026-09-24 13:43 UTC
Assigner: microsoft
NVD status: Modified

Search on…

Description

Improper authorization in .NET allows an authorized attacker to elevate privileges locally.

Weaknesses (CWE)

CWE-285 — Improper Authorization
CWE-266 — Incorrect Privilege Assignment
CWE-863 — Incorrect Authorization

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	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	microsoft
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat-SADP
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary)

European references

ENISA EUVD · EUVD-2026-35674
GCVE · GCVE-0-2026-45490

CERT-FR advisories

CERTFR-2026-AVI-0796 — Multiples vulnérabilités dans Tenable Identity Exposure · cert.ssi.gouv.fr
CERTFR-2026-AVI-0728 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.28
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.17
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.9

Affected products

Product	Versions
Microsoft · .NET 10.0	affected 10.0.0 < 10.0.9
Microsoft · .NET 8.0	affected 8.0.0 < 8.0.28
Microsoft · .NET 9.0	affected 9.0.0 < 9.0.17

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD