CVE-2026-32178

HIGHNVD 7.57.5—

7.5

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

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 18.2%
KEV: Not listed

Published

April 14, 2026

Last Modified

May 7, 2026

Advisory Details (1)

Auto-updated May 7, 2026

Patch available. Sources: microsoft.

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

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

Patch Availability(19)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	netstandard-targeting-pack-2.1-9.0 (9.0.116-0ubuntu1~25.10.1) @ questing	2026-05-20	ubuntu
ubuntu	dotnet10 (10.0.107-10.0.7-0ubuntu1~26.04.1) @ resolute	2026-05-20	ubuntu
redhat	dotnet8.0-0:8.0.126-1.el9_4	2026-05-05	redhat
redhat	dotnet8.0-0:8.0.126-1.el9_6	2026-05-04	redhat
redhat	dotnet8.0-0:8.0.126-1.el10_0	2026-05-04	redhat
redhat	dotnet9.0-0:9.0.116-1.el9_6	2026-05-04	redhat
redhat	dotnet9.0-0:9.0.116-1.el10_0	2026-05-04	redhat
redhat	dotnet9-0-main-9.0.116-1.hum1	2026-04-21	redhat
redhat	dotnet10-0-main-10.0.106-1.hum1	2026-04-20	redhat
redhat	dotnet8-0-main-8.0.126-1.hum1	2026-04-20	redhat
redhat	dotnet8.0-0:8.0.126-1.el9_7	2026-04-16	redhat
redhat	dotnet10.0-0:10.0.106-1.el9_7	2026-04-16	redhat
redhat	dotnet10.0-0:10.0.106-1.el10_1	2026-04-16	redhat
redhat	dotnet8.0-0:8.0.126-1.el8_10	2026-04-16	redhat
redhat	dotnet10.0-0:10.0.106-1.el8_10	2026-04-16	redhat
redhat	dotnet9.0-0:9.0.116-1.el8_10	2026-04-16	redhat
redhat	dotnet9.0-0:9.0.116-1.el9_7	2026-04-16	redhat
redhat	dotnet8.0-0:8.0.126-1.el10_1	2026-04-16	redhat
redhat	dotnet9.0-0:9.0.116-1.el10_1	2026-04-16	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(12 across 1 ecosystem)

NuGet(12)

Package	Vulnerable range	Fixed in	Dependents
Microsoft.NetCore.App.Runtime.linux-arm	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.linux-arm64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.linux-musl-arm	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.linux-musl-arm64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.linux-musl-x64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.linux-x64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.osx-arm64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.osx-x64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.win-arm	—	8.0.26	—
Microsoft.NetCore.App.Runtime.win-arm64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.win-x64	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—
Microsoft.NetCore.App.Runtime.win-x86	8.0.0 ... 8.0.8 (25 versions)	8.0.26	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-138

All Vendor Advisories

(20)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-23 00:08 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-32178?

CVE-2026-32178 is a high vulnerability published on April 14, 2026. Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.

When was CVE-2026-32178 disclosed?

CVE-2026-32178 was first published in the National Vulnerability Database on April 14, 2026, with the most recent update on May 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-32178 actively exploited?

CVE-2026-32178 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-32178?

CVE-2026-32178 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2026-32178?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32178, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-32178

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