What is CVE-2026-32178?

CVE-2026-32178 is a high-severity software vulnerability (CWE-138) with a CVSS score of 7.5. Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.

Is CVE-2026-32178 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 2%.

What products does CVE-2026-32178 affect?

Tracked products affected include .NET, Linux Kernel, macOS. Check the version you run to see whether it is affected.

How do I fix CVE-2026-32178?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

← All products

CVE-2026-32178

HIGH severity · CVSS 7.5 · CWE-138

7.5CVSS HIGH

Summary

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

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactNone

Availability impactNone

Exploit probability (EPSS)2%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products we track (3)

.NET Linux Kernel macOS

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178Advisory
https://access.redhat.com/errata/RHSA-2026:13280
https://access.redhat.com/errata/RHSA-2026:13281
https://access.redhat.com/errata/RHSA-2026:13282
https://access.redhat.com/errata/RHSA-2026:13283
https://access.redhat.com/errata/RHSA-2026:13693
https://access.redhat.com/errata/RHSA-2026:8467
https://access.redhat.com/errata/RHSA-2026:8468