High [CVE-2026-62909] .NET:.NET Elevation of Privilege Vulnerability
This high-severity Red Hat Linux advisory covers CVE-2026-62909 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.
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Summary
Uncaught exception in.NET allows an authorized attacker to elevate privileges locally. This vulnerability is rated as Important.
A truncation error in the.NET diagnostics IPC, specifically within ipc_transport_get_default_name when processing excessively long TMPDIR paths, could lead to a local elevation of privilege. This allows an attacker with local access to potentially gain higher privileges on the system.
Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H). Weakness: CWE-252.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images; Red Hat OpenShift Dev Spaces.
Red Hat fixing advisory: RHSA-2026:54541, RHSA-2026:54590, RHSA-2026:55858, RHSA-2026:58566, RHSA-2026:58567, RHSA-2026:54538, RHSA-2026:54542, RHSA-2026:54550, RHSA-2026:54574, RHSA-2026:55856, RHSA-2026:55857, RHSA-2026:58568, RHSA-2026:58569, RHSA-2026:58570, RHSA-2026:44914, RHSA-2026:55142, RHSA-2026:55405.
Affected products named by the advisory: Red Hat package: dotnet8.0; Red Hat package: dotnet9.0; Red Hat package: dotnet10.0.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
- dotnet8.0-0:8.0.130-1.el10_2
- dotnet9.0-0:9.0.120-1.el10_2
- dotnet10.0-0:10.0.111-1.el10_2
- dotnet8.0-0:8.0.130-1.el10_0
- dotnet9.0-0:9.0.120-1.el10_0
- dotnet8.0-0:8.0.130-1.el8_10
- dotnet10.0-0:10.0.111-1.el8_10
- dotnet9.0-0:9.0.120-1.el8_10
- dotnet8.0-0:8.0.130-1.el9_8
- dotnet9.0-0:9.0.120-1.el9_8
- dotnet10.0-0:10.0.111-1.el9_8
- dotnet8.0-0:8.0.130-1.el9_4
- dotnet8.0-0:8.0.130-1.el9_6
- dotnet9.0-0:9.0.120-1.el9_6
- dotnet9-0-main-9.0.119-2.hum1
- dotnet10-0-main-10.0.11-1.hum1
- dotnet8-0-main-8.0.130-0.1.hum1
- RHSA-2026:54541
- RHSA-2026:54590
- RHSA-2026:55858
- RHSA-2026:58566
- RHSA-2026:58567
- RHSA-2026:54538
- RHSA-2026:54542
- RHSA-2026:54550
- RHSA-2026:54574
- RHSA-2026:55856
- RHSA-2026:55857
- RHSA-2026:58568
- RHSA-2026:58569
- RHSA-2026:58570
- RHSA-2026:44914
- RHSA-2026:55142
- RHSA-2026:55405
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
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