SB2026041580 - Multiple vulnerabilities in Microsoft .NET Framework

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper handling of exceptional conditions (CVE-ID: CVE-2026-23666)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of errors in .NET Framework. A remote attacker can send specially crafted input and perform a denial of service (DoS) attack.

2) Race condition (CVE-ID: CVE-2026-32226)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition in .NET Framework. A remote attacker can exploit the race and cause a denial of service condition on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23666
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226