Medium [CVE-2026-45491] .NET: Local file tampering via link following vulnerability
This medium-severity Red Hat Linux advisory covers CVE-2026-45491 affecting Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
.NET: Local file tampering via link following vulnerability. Red Hat rates this moderate (CVSS 6.2).
Weakness: CWE-59. Affected package(s): dotnet8, dotnet8.0, dotnet9.0, dotnet9, dotnet10.0, dotnet10.
Resolved in Red Hat advisory RHSA-2026:25110 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
- dotnet8-0-main-8.0.128-1.hum1
- dotnet8.0-0:8.0.128-1.el10_2
- dotnet9.0-0:9.0.118-1.el10_2
- dotnet9.0-0:9.0.118-1.el8_10
- dotnet8.0-0:8.0.128-1.el9_6
- dotnet8.0-0:8.0.128-1.el9_8
- dotnet9-0-main-9.0.117-1.hum1
- dotnet9.0-0:9.0.118-1.el10_0
- dotnet9.0-0:9.0.118-1.el9_6
- dotnet8.0-0:8.0.128-1.el8_10
- dotnet10.0-0:10.0.109-1.el9_8
- dotnet10.0-0:10.0.109-1.el8_10
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:25110
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:25110 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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