RHSA-2026:58566: CVEs fixed (Red Hat)

RHSA-2026:58566 fixes 2 tracked CVEs. Affected systems and fixed versions.

• CVE-2026-50649 HIGH 7.8 DOWNGRADE UPGRADE Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
• CVE-2026-50646 HIGH 7.8 DOWNGRADE UPGRADE Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

Applies to

• RHEL 10.0 Extended Update Support · fixed in dotnet8.0-8.0.130-1.el10_0

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