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High 7.5Published Apr 14, 2026
CVE-2026-32203.NET and Visual Studio Denial of Service Vulnerability
Updated under an hour ago ()
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It affects Microsoft .NET 10.0 and 12 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-121, CWE-20, CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft .NET 10.0 microsoft:net_10.0 (from the name) | from 10.0.0 before 10.0.6 | CNA record |
Microsoft .NET 8.0 microsoft:net_8.0 (from the name) | from 8.0.0 before 8.0.26 | CNA record |
Microsoft .NET 9.0 microsoft:net_9.0 (from the name) | from 9.0.0 before 9.0.15 | CNA record |
Microsoft Microsoft Visual Studio 2022 version 17.12 microsoft:visual_studio_2022_version_17.12 (from the name) | from 17.12.0 before 17.12.19 | CNA record |
Microsoft Microsoft Visual Studio 2022 version 17.14 microsoft:visual_studio_2022_version_17.14 (from the name) | from 17.14.0 before 17.14.30 | CNA record |
Microsoft Microsoft Visual Studio 2026 version 18.4 microsoft:visual_studio_2026_version_18.4 (from the name) | from 18.4.0 before 18.4.4 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:10.0.106-1.el10_1 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:9.0.116-1.el10_0 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:8.0.126-1.el9_4 not affected | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 10.0.106-1.hum1 not affected | CISA ADP |
microsoft .net microsoft:.net | from 10.0.0 before 10.0.6; from 8.0.0 before 8.0.26; from 9.0.0 before 9.0.15 | NVD |
microsoft visual_studio_2022 microsoft:visual_studio_2022 | from 17.12.0 before 17.12.19; from 17.14.0 before 17.14.30 | NVD |
microsoft visual_studio_2026 microsoft:visual_studio_2026 | from 18.4.0 before 18.4.4 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203vendor-advisory, patch
- 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
- https://access.redhat.com/errata/RHSA-2026:8469
- https://access.redhat.com/errata/RHSA-2026:8470
- https://access.redhat.com/errata/RHSA-2026:8471
- https://access.redhat.com/errata/RHSA-2026:8472
- https://access.redhat.com/errata/RHSA-2026:8473
- https://access.redhat.com/errata/RHSA-2026:8474
- https://access.redhat.com/errata/RHSA-2026:8475
- https://access.redhat.com/errata/RHSA-2026:9077
- https://access.redhat.com/errata/RHSA-2026:9080
- https://access.redhat.com/errata/RHSA-2026:9205
- https://access.redhat.com/security/cve/CVE-2026-32203
- https://bugzilla.redhat.com/show_bug.cgi?id=2457740
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32203.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.