CVE catalog
CVE-2026-45490
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.38% · Oct 25, 2026
A flaw was found in the .NET SDK dotnet.exe workload command on Windows. Insufficient access controls on a named pipe could allow a local attacker to perform arbitrary file creation or truncation operations with the privileges of another local user. This issue may lead to privilege escalation and unauthorized access, modification, or destruction of data belonging to the targeted user. dotnet: .NET SDK workload elevate: arbitrary file creation/truncation via LogFile named pipe. Red Hat products are not affected by this vulnerability. The issue is specific to the .NET SDK workload management functionality on Microsoft Windows systems and does not impact Red Hat supported platforms. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | .net | Not reported | 8.0.28 | fixed |
| Cpe | .net | Not reported | 9.0.17 | fixed |
| Cpe | .net | Not reported | 10.0.9 | fixed |
| Ubuntu | dotnet7 | 22.04 | 7.0.105-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.107-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.108-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.109-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.110-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.111-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.112-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.113-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.114-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.115-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.116-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.117-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.117-0ubuntu1~22.04.2 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.119-0ubuntu1~22.04.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | .net | cpe | Not reported | 8.0.28 | Not reported | Not reported | Not reported |
| Cpe | .net | cpe | Not reported | 9.0.17 | Not reported | Not reported | Not reported |
| Cpe | .net | cpe | Not reported | 10.0.9 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45490]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-45490]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1845.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]