Description
Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 – < 10.0.6 | 10.0.6 |
| Microsoft | .NET 8.0 | 8.0.0 – < 8.0.26 | 8.0.26 |
| Microsoft | .NET 9.0 | 9.0.0 – < 9.0.15 | 9.0.15 |
| Microsoft | Microsoft Visual Studio 2022 version 17.12 | 17.12.0 – < 17.12.19 | 17.12.19 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 – < 17.14.30 | 17.14.30 |
| Microsoft | Microsoft Visual Studio 2026 version 18.4 | 18.4.0 – < 18.4.4 | 18.4.4 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | dotnet10 | 10.0.107-10.0.7-0ubuntu1~26.04.1 | — |
| Ubuntu 26.04 LTS | dotnet10 | 10.0.107-10.0.7-0ubuntu1~26.04.1 | — |
| Ubuntu 25.10 | dotnet10 | 10.0.106-10.0.6-0ubuntu1~25.10.1 | — |
| Ubuntu 25.10 | dotnet8 | 8.0.126-8.0.26-0ubuntu1~25.10.1 | — |
| Ubuntu 25.10 | dotnet9 | 9.0.116-9.0.15-0ubuntu1~25.10.1 | — |
| Ubuntu 24.04 LTS | dotnet10 | 10.0.106-10.0.6-0ubuntu1~24.04.1 | — |
| Ubuntu 24.04 LTS | dotnet8 | 8.0.126-8.0.26-0ubuntu1~24.04.1 | — |
| Ubuntu 22.04 LTS | dotnet6 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | dotnet8 | 8.0.126-8.0.26-0ubuntu1~22.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | dotnet-host +8 | 10.0.6-1.el10_1 | RHSA-2026:8467 |
| RHEL 10 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el10_1 | RHSA-2026:8470 |
| RHEL 10 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.el10_1 | RHSA-2026:8472 |
| RHEL 10 | dotnet10.0 +5 | 10.0.106-1.el10_1 | RHSA-2026:8467 |
| RHEL 10 | dotnet8.0 +4 | 8.0.126-1.el10_1 | RHSA-2026:8470 |
| RHEL 10 | dotnet9.0 +6 | 9.0.116-1.el10_1 | RHSA-2026:8472 |
| RHEL 9 | dotnet-host +8 | 10.0.6-1.el9_7 | RHSA-2026:8471 |
| RHEL 9 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el9_7 | RHSA-2026:8469 |
| RHEL 9 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.el9_7 | RHSA-2026:8474 |
| RHEL 9 | dotnet10.0 +5 | 10.0.106-1.el9_7 | RHSA-2026:8471 |
| RHEL 9 | dotnet8.0 +4 | 8.0.126-1.el9_7 | RHSA-2026:8469 |
| RHEL 9 | dotnet9.0 +6 | 9.0.116-1.el9_7 | RHSA-2026:8474 |
| RHEL 8 | dotnet +6 | 10.0.106-1.el8_10 | RHSA-2026:8473 |
| RHEL 8 | dotnet-host +8 | 10.0.6-1.el8_10 | RHSA-2026:8473 |
| RHEL 8 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el8_10 | RHSA-2026:8468 |
| RHEL 8 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.el8_10 | RHSA-2026:8475 |
| RHEL 8 | dotnet8.0 +4 | 8.0.126-1.el8_10 | RHSA-2026:8468 |
| RHEL 8 | dotnet9.0 +6 | 9.0.116-1.el8_10 | RHSA-2026:8475 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | dotnet-host +8 | 9.0.15-1.el10_0 | RHSA-2026:13280 |
| RHEL 10.0 EUS | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el10_0 | RHSA-2026:13281 |
| RHEL 10.0 EUS | dotnet8.0 +4 | 8.0.126-1.el10_0 | RHSA-2026:13281 |
| RHEL 10.0 EUS | dotnet9.0 +6 | 9.0.116-1.el10_0 | RHSA-2026:13280 |
| RHEL 9.6 EUS | dotnet-host +8 | 9.0.15-1.el9_6 | RHSA-2026:13282 |
| RHEL 9.6 EUS | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el9_6 | RHSA-2026:13283 |
| RHEL 9.6 EUS | dotnet8.0 +4 | 8.0.126-1.el9_6 | RHSA-2026:13283 |
| RHEL 9.6 EUS | dotnet9.0 +6 | 9.0.116-1.el9_6 | RHSA-2026:13282 |
| RHEL 9.4 EUS | dotnet-host +8 | 8.0.26-1.el9_4 | RHSA-2026:13693 |
| RHEL 9.4 EUS | dotnet8.0 +5 | 8.0.126-1.el9_4 | RHSA-2026:13693 |
| Red Hat Hardened Images 1 | dotnet10.0 | 10.0.106-1.hum1 | RHSA-2026:9077 |
| Red Hat Hardened Images 1 | dotnet8.0 | 8.0.126-1.hum1 | RHSA-2026:9080 |
| Red Hat Hardened Images 1 | dotnet9.0 | 9.0.116-1.hum1 | RHSA-2026:9205 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el10_1 | ALSA-2026:8470 |
| AlmaLinux 10 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.el10_1 | ALSA-2026:8472 |
| AlmaLinux 10 | dotnet-sdk-8.0 +3 | 8.0.126-1.el10_1 | ALSA-2026:8470 |
| AlmaLinux 10 | dotnet-sdk-9.0 +5 | 9.0.116-1.el10_1 | ALSA-2026:8472 |
| AlmaLinux 9 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el9_7 | ALSA-2026:8469 |
| AlmaLinux 9 | dotnet-sdk-8.0 +3 | 8.0.126-1.el9_7 | ALSA-2026:8469 |
| AlmaLinux 8 | dotnet +5 | 10.0.106-1.el8_10 | ALSA-2026:8473 |
| AlmaLinux 8 | dotnet-host +8 | 10.0.6-1.el8_10 | ALSA-2026:8473 |
| AlmaLinux 8 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.el8_10 | ALSA-2026:8468 |
| AlmaLinux 8 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.el8_10 | ALSA-2026:8475 |
| AlmaLinux 8 | dotnet-sdk-8.0 +3 | 8.0.126-1.el8_10 | ALSA-2026:8468 |
| AlmaLinux 8 | dotnet-sdk-9.0 +5 | 9.0.116-1.el8_10 | ALSA-2026:8475 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | dotnet10.0 | 10.0.106-1.el10_1 | RLSA-2026:8467 |
| Rocky Linux 10 | dotnet8.0 | 8.0.126-1.el10_1 | RLSA-2026:8470 |
| Rocky Linux 10 | dotnet9.0 | 9.0.116-1.el10_1 | RLSA-2026:8472 |
| Rocky Linux 9 | dotnet10.0 | 10.0.106-1.el9_7 | RLSA-2026:8471 |
| Rocky Linux 9 | dotnet8.0 | 8.0.126-1.el9_7 | RLSA-2026:8469 |
| Rocky Linux 9 | dotnet9.0 | 9.0.116-1.el9_7 | RLSA-2026:8474 |
| Rocky Linux 8 | dotnet10.0 | 10.0.106-1.el8_10 | RLSA-2026:8473 |
| Rocky Linux 8 | dotnet8.0 | 8.0.126-1.el8_10 | RLSA-2026:8468 |
| Rocky Linux 8 | dotnet9.0 | 9.0.116-1.el8_10 | RLSA-2026:8475 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | dotnet +5 | 8.0.126-1.amzn2023.0.1 | ALAS2023-2026-1629, ALAS2023-2026-1628, ALAS2023-2026-1627 |
| Amazon Linux 2023 | dotnet-host +8 | 8.0.26-1.amzn2023.0.1 | ALAS2023-2026-1629, ALAS2023-2026-1628, ALAS2023-2026-1627 |
| Amazon Linux 2023 | dotnet-hostfxr-10.0 +7 | 10.0.6-1.amzn2023.0.1 | ALAS2023-2026-1627 |
| Amazon Linux 2023 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.amzn2023.0.1 | ALAS2023-2026-1628 |
| Amazon Linux 2023 | dotnet-sdk-10.0 +4 | 10.0.106-1.amzn2023.0.1 | ALAS2023-2026-1627 |
| Amazon Linux 2023 | dotnet-sdk-9.0 +4 | 9.0.116-1.amzn2023.0.1 | ALAS2023-2026-1628 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | dotnet-host +8 | 10.0.6-1.0.1.el10_1 | ELSA-2026-8467 |
| Oracle Linux 10 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.0.1.el10_1 | ELSA-2026-8470 |
| Oracle Linux 10 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.0.1.el10_1 | ELSA-2026-8472 |
| Oracle Linux 10 | dotnet-sdk-10.0 +4 | 10.0.106-1.0.1.el10_1 | ELSA-2026-8467 |
| Oracle Linux 10 | dotnet-sdk-8.0 +3 | 8.0.126-1.0.1.el10_1 | ELSA-2026-8470 |
| Oracle Linux 10 | dotnet-sdk-9.0 +5 | 9.0.116-1.0.1.el10_1 | ELSA-2026-8472 |
| Oracle Linux 9 | dotnet-host +8 | 10.0.6-1.0.1.el9_7 | ELSA-2026-8471 |
| Oracle Linux 9 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.0.1.el9_7 | ELSA-2026-8469 |
| Oracle Linux 9 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.0.1.el9_7 | ELSA-2026-8474 |
| Oracle Linux 9 | dotnet-sdk-10.0 +4 | 10.0.106-1.0.1.el9_7 | ELSA-2026-8471 |
| Oracle Linux 9 | dotnet-sdk-8.0 +3 | 8.0.126-1.0.1.el9_7 | ELSA-2026-8469 |
| Oracle Linux 9 | dotnet-sdk-9.0 +5 | 9.0.116-1.0.1.el9_7 | ELSA-2026-8474 |
| Oracle Linux 8 | dotnet +5 | 10.0.106-1.0.1.el8_10 | ELSA-2026-8473 |
| Oracle Linux 8 | dotnet-host +8 | 10.0.6-1.0.1.el8_10 | ELSA-2026-8473 |
| Oracle Linux 8 | dotnet-hostfxr-8.0 +7 | 8.0.26-1.0.1.el8_10 | ELSA-2026-8468 |
| Oracle Linux 8 | dotnet-hostfxr-9.0 +7 | 9.0.15-1.0.1.el8_10 | ELSA-2026-8475 |
| Oracle Linux 8 | dotnet-sdk-8.0 +3 | 8.0.126-1.0.1.el8_10 | ELSA-2026-8468 |
| Oracle Linux 8 | dotnet-sdk-9.0 +5 | 9.0.116-1.0.1.el8_10 | ELSA-2026-8475 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| NuGet | System.Security.Cryptography.Xml | >= 10.0.0, < 10.0.6 | 10.0.6 | GHSA-6588-8gv4-xfgh |
| NuGet | System.Security.Cryptography.Xml | >= 9.0.0, < 9.0.15 | 9.0.15 | GHSA-6588-8gv4-xfgh |
| NuGet | System.Security.Cryptography.Xml | >= 8.0.0, < 8.0.3 | 8.0.3 | GHSA-6588-8gv4-xfgh |
Advisories 47
- ALSA-2026:8472 Important: .NET 9.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8470 Important: .NET 8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8469 Important: .NET 8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8473 Important: .NET 10.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8475 Important: .NET 9.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:8468 Important: .NET 8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:9205 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:9077 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:9080 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:8468 Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 11, 2026
- RHSA-2026:8475 Red Hat Security Advisory: .NET 9.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8474 Red Hat Security Advisory: .NET 9.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8473 Red Hat Security Advisory: .NET 10.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8472 Red Hat Security Advisory: .NET 9.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8470 Red Hat Security Advisory: .NET 8.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8471 Red Hat Security Advisory: .NET 10.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8469 Red Hat Security Advisory: .NET 8.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:8467 Red Hat Security Advisory: .NET 10.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:13693 Red Hat Security Advisory: .NET 8.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:13282 Red Hat Security Advisory: .NET 9.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:13283 Red Hat Security Advisory: .NET 8.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:13281 Red Hat Security Advisory: .NET 8.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- RHSA-2026:13280 Red Hat Security Advisory: .NET 9.0 security update Red Hat Security Advisories (RHSA) · Jun 30, 2026
- WID-SEC-2026-1100 Microsoft DeveloperTools: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 26, 2026
- ALAS2023-2026-1627 Important: dotnet10.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 30, 2026
- ALAS2023-2026-1628 Important: dotnet9.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 30, 2026
- ALAS2023-2026-1629 Important: dotnet8.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 30, 2026
- MSRC-CVE-2026-32203 .NET and Visual Studio Denial of Service Vulnerability Microsoft Security Response Center · Apr 20, 2026
- ELSA-2026-8469 Important: .NET 8.0 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 20, 2026
- ELSA-2026-8468 Important: .NET 8.0 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 20, 2026
- RLSA-2026:8474 Important: .NET 9.0 security update Rocky Linux Security Advisories · Apr 19, 2026
- RLSA-2026:8469 Important: .NET 8.0 security update Rocky Linux Security Advisories · Apr 19, 2026
- RLSA-2026:8471 Important: .NET 10.0 security update Rocky Linux Security Advisories · Apr 19, 2026
- RLSA-2026:8473 Important: .NET 10.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- RLSA-2026:8472 Important: .NET 9.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- RLSA-2026:8470 Important: .NET 8.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- RLSA-2026:8467 Important: .NET 10.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- RLSA-2026:8468 Important: .NET 8.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- RLSA-2026:8475 Important: .NET 9.0 security update Rocky Linux Security Advisories · Apr 18, 2026
- ELSA-2026-8470 Important: .NET 8.0 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8467 Important: .NET 10.0 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8474 Important: .NET 9.0 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8471 Important: .NET 10.0 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8475 Important: .NET 9.0 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8472 Important: .NET 9.0 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- ELSA-2026-8473 Important: .NET 10.0 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 16, 2026
- NCSC-2026-0114 Kwetsbaarheden verholpen in Microsoft Developer tools NCSC-NL (Netherlands) · Apr 14, 2026
References
- .NET and Visual Studio Denial of Service Vulnerability vendor-advisory patch