Critical Security Updates for .NET SDK and Runtime Address Multiple CVEs

Critical Security Updates for .NET SDK and Runtime Address Multiple CVEs

First seen 28 Jun 2026, 04:07 UTC Linuxsecurity 93% similarity 72.0
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On June 28, 2026, Fedora released critical updates for .NET SDK and Runtime versions 8.0, 9.0, and 10.0 to address vulnerabilities CVE-2026-45490, CVE-2026-45491, and CVE-2026-45591. These vulnerabilities were published on June 9, 2026, and affect multiple Fedora versions, including 43 and 44. The updates were initiated by developer Omair Majid on June 16, 2026, and include enhancements and fixes for security issues. Users are advised to upgrade to the latest SDK and Runtime versions to mitigate risks. The updates can be installed using the 'dnf' package manager. The vulnerabilities could allow unauthorized access or execution of malicious code, posing a significant risk to affected systems. Immediate action is recommended for users running the impacted versions.

Key Points: • Critical updates released for .NET SDK and Runtime versions 8.0, 9.0, and 10.0. • Vulnerabilities CVE-2026-45490, CVE-2026-45491, and CVE-2026-45591 were published on June 9, 2026. • Users are urged to apply updates immediately to prevent potential exploitation.

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Timeline

2026-06-09
CVE-2026-45490 published
CVE-2026-45490 was disclosed, detailing a critical vulnerability in .NET SDK and Runtime.
Linuxsecurity
2026-06-09
CVE-2026-45491 published
CVE-2026-45491 was disclosed alongside CVE-2026-45490, affecting .NET SDK and Runtime.
Linuxsecurity
2026-06-09
CVE-2026-45591 published
CVE-2026-45591 was also disclosed, highlighting vulnerabilities in the .NET framework.
Linuxsecurity
2026-06-16
Updates released for .NET SDK and Runtime
Fedora released updates for .NET SDK and Runtime versions 8.0, 9.0, and 10.0 to address the vulnerabilities.
Linuxsecurity
2026-06-28
Critical updates available for users
Fedora users are urged to upgrade to the latest SDK and Runtime versions to mitigate risks.
Linuxsecurity

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