SB20260415151 - Multiple vulnerabilities in Microsoft .NET

Description

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion (CVE-ID: CVE-2026-26171)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to application does not properly control consumption of internal resources in .NET. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

2) Improper Neutralization of Special Elements (CVE-ID: CVE-2026-32178)

CWE-ID: CWE-138 - Improper Neutralization of Special Elements

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper neutralization of special elements in .NET. A remote attacker can perform spoofing attack.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178