How severe is CVE-2026-32178?

CVE-2026-32178 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-32178 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32178?

CVE-2026-32178 primarily affects Microsoft .net. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-32178?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-32178 have an EU (EUVD) identifier?

Yes. CVE-2026-32178 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22562.

When was CVE-2026-32178 published?

CVE-2026-32178 was published on 2026-04-14 and last updated on 2026-06-30.

CVE-2026-32178

CVE-2026-32178 is a high-severity vulnerability in Microsoft .net with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-138.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22562
Weakness: CWE-138
Affected product: Microsoft .net
Published: 2026-04-14
Last modified: 2026-06-30

Description

Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.

Frequently asked questions

What is CVE-2026-32178?: Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
How severe is CVE-2026-32178?: CVE-2026-32178 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-32178 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32178?: CVE-2026-32178 primarily affects Microsoft .net. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-32178?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-32178 have an EU (EUVD) identifier?: Yes. CVE-2026-32178 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22562.
When was CVE-2026-32178 published?: CVE-2026-32178 was published on 2026-04-14 and last updated on 2026-06-30.

References

Affected products (2)

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*

More vulnerabilities in Microsoft .net

CVE-2024-43498 — Critical (CVSS 9.8): .NET and Visual Studio Remote Code Execution Vulnerability
CVE-2024-0057 — Critical (CVSS 9.1): NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability
CVE-2025-21176 — High (CVSS 8.8): .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability
CVE-2024-0056 — High (CVSS 8.7): Microsoft.Data.SqlClient and System.Data.SqlClient SQL Data Provider Security Feature Bypass Vulnerability
CVE-2024-38229 — High (CVSS 8.1): .NET and Visual Studio Remote Code Execution Vulnerability
CVE-2024-35264 — High (CVSS 8.1): .NET and Visual Studio Remote Code Execution Vulnerability

All CVEs affecting Microsoft .net →

Other CWE-138 vulnerabilities

CVE-2023-42117 — Critical (CVSS 9.8): Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote…
CVE-2024-38133 — High (CVSS 7.8): Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-26129 — High (CVSS 7.5): Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an…
CVE-2022-0024 — High (CVSS 7.2): A vulnerability exists in Palo Alto Networks PAN-OS software that enables an authenticated network-based PAN-OS…
CVE-2026-20009 — Medium (CVSS 5.3): A vulnerability in the implementation of the proprietary SSH stack with SSH key-based authentication in Cisco Secure…
CVE-2024-51500 — Medium (CVSS 5.3): Meshtastic firmware is a device firmware for the Meshtastic project. The Meshtastic firmware does not check for packets…

Browse all CWE-138 vulnerabilities →