CVE-2026-32178
.NET Spoofing Vulnerability
At a glance
- Severity
- HIGH 7.5
- EPSS
- EPSS 2.28 % · percentile 83 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | redhat-SADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Weaknesses (CWE)
Advisories
- GHSA-vmwf-m9c5-3jvc — Microsoft Security Advisory CVE-2026-32178 – .NET Spoofing Vulnerability
European references
- ENISA EUVD · EUVD-2026-22562
- GCVE · GCVE-0-2026-32178
CERT-FR advisories
- CERTFR-2026-AVI-0796 — Multiples vulnérabilités dans Tenable Identity Exposure · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0445 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0443 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 10.0.0 < 10.0.6cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.0.26cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 9.0.0 < 9.0.15cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*≥ 17.12.0 < 17.12.19cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*≥ 17.14.0 < 17.14.30
Affected products
| Product | Versions |
|---|---|
| Microsoft · .NET 10.0 | affected 10.0.0 < 10.0.6 |
| Microsoft · .NET 8.0 | affected 8.0 < 8.0.26 |
| Microsoft · .NET 8.0 | affected 8.0.0 < 8.0.26 |
| Microsoft · .NET 9.0 | affected 9.0.0 < 9.0.15 |
| Microsoft · Microsoft Visual Studio 2022 version 17.12 | affected 17.12.0 < 17.12.19 |
| Microsoft · Microsoft Visual Studio 2022 version 17.14 | affected 17.14.0 < 17.14.30 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178
- https://access.redhat.com/security/cve/CVE-2026-32178
- https://bugzilla.redhat.com/show_bug.cgi?id=2457781
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32178.json
- https://access.redhat.com/errata/RHSA-2026:13281
- https://access.redhat.com/errata/RHSA-2026:13280
- https://access.redhat.com/errata/RHSA-2026:8467
- https://access.redhat.com/errata/RHSA-2026:8470
- https://access.redhat.com/errata/RHSA-2026:8472
- https://access.redhat.com/errata/RHSA-2026:8473
- https://access.redhat.com/errata/RHSA-2026:8468
- https://access.redhat.com/errata/RHSA-2026:8475
- https://access.redhat.com/errata/RHSA-2026:13693
- https://access.redhat.com/errata/RHSA-2026:13283
- https://access.redhat.com/errata/RHSA-2026:13282
- https://access.redhat.com/errata/RHSA-2026:8471
- https://access.redhat.com/errata/RHSA-2026:8469
- https://access.redhat.com/errata/RHSA-2026:8474
- https://access.redhat.com/errata/RHSA-2026:9077
- https://access.redhat.com/errata/RHSA-2026:9080
- https://access.redhat.com/errata/RHSA-2026:9205
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |