Description
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | .NET 10.0 runtime | 10.0.0 – < 10.0.111, 10.0.400 | 10.0.111, 10.0.400 |
| Microsoft | .NET 11.0 runtime | 11.0.0 – < 11.0 RC1 | 11.0 RC1 |
| Microsoft | .NET 8.0 runtime | 8.0.0 – < 8.0.130, 8.0.424 | 8.0.130, 8.0.424 |
| Microsoft | .NET 9.0 runtime | 9.0.0 – < 9.0.120, 9.0.317 | 9.0.120, 9.0.317 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 – < 17.14.40 | 17.14.40 |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0 – < 18.9.3 | 18.9.3 |
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 26.04 LTS | dotnet10 | 10.0.112-10.0.12-0ubuntu1~26.04.1 | USN-8740-1 |
| Ubuntu 24.04 LTS | dotnet10 | 10.0.112-10.0.12-0ubuntu1~24.04.1 | USN-8740-1 |
| Ubuntu 24.04 LTS | dotnet8 | 8.0.131-8.0.31-0ubuntu1~24.04.1 | USN-8740-1 |
| Ubuntu 22.04 LTS | dotnet6 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | dotnet8 | 8.0.131-8.0.31-0ubuntu1~22.04.1 | USN-8740-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | dotnet-host +8 | 10.0.12-1.el10_2 | RHSA-2026:67530 |
| RHEL 10 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el10_2 | RHSA-2026:67525 |
| RHEL 10 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el10_2 | RHSA-2026:67528 |
| RHEL 10 | dotnet10.0 +5 | 10.0.112-1.el10_2 | RHSA-2026:67530 |
| RHEL 10 | dotnet8.0 +4 | 8.0.131-1.el10_2 | RHSA-2026:67525 |
| RHEL 10 | dotnet9.0 +6 | 9.0.121-1.el10_2 | RHSA-2026:67528 |
| RHEL 9 | dotnet-host +8 | 10.0.12-1.el9_8 | RHSA-2026:67613 |
| RHEL 9 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el9_8 | RHSA-2026:67524 |
| RHEL 9 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el9_8 | RHSA-2026:67614 |
| RHEL 9 | dotnet10.0 +5 | 10.0.112-1.el9_8 | RHSA-2026:67613 |
| RHEL 9 | dotnet8.0 +4 | 8.0.131-1.el9_8 | RHSA-2026:67524 |
| RHEL 9 | dotnet9.0 +6 | 9.0.121-1.el9_8 | RHSA-2026:67614 |
| RHEL 8 | dotnet +6 | 10.0.112-1.el8_10 | RHSA-2026:68676 |
| RHEL 8 | dotnet-host +8 | 10.0.12-1.el8_10 | RHSA-2026:68676 |
| RHEL 8 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el8_10 | RHSA-2026:68316 |
| RHEL 8 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el8_10 | RHSA-2026:68233 |
| RHEL 8 | dotnet8.0 +4 | 8.0.131-1.el8_10 | RHSA-2026:68316 |
| RHEL 8 | dotnet9.0 +6 | 9.0.121-1.el8_10 | RHSA-2026:68233 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | dotnet10.0 +5 | 10.0.112-1.hum1 | RHSA-2026:66863 |
| Red Hat Hardened Images 1 | dotnet8.0 +4 | 8.0.131-0.1.hum1 | RHSA-2026:77004 |
| Red Hat Hardened Images 1 | dotnet9.0 +6 | 9.0.121-0.1.hum1 | RHSA-2026:76978 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | dotnet-host +8 | 10.0.12-1.el10_2 | ALSA-2026:67530 |
| AlmaLinux 10 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el10_2 | ALSA-2026:67525 |
| AlmaLinux 10 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el10_2 | ALSA-2026:67528 |
| AlmaLinux 10 | dotnet-sdk-10.0 +4 | 10.0.112-1.el10_2 | ALSA-2026:67530 |
| AlmaLinux 10 | dotnet-sdk-8.0 +3 | 8.0.131-1.el10_2 | ALSA-2026:67525 |
| AlmaLinux 10 | dotnet-sdk-9.0 +5 | 9.0.121-1.el10_2 | ALSA-2026:67528 |
| AlmaLinux 9 | dotnet-host +8 | 10.0.12-1.el9_8 | ALSA-2026:67613 |
| AlmaLinux 9 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el9_8 | ALSA-2026:67524 |
| AlmaLinux 9 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el9_8 | ALSA-2026:67614 |
| AlmaLinux 9 | dotnet-sdk-10.0 +4 | 10.0.112-1.el9_8 | ALSA-2026:67613 |
| AlmaLinux 9 | dotnet-sdk-8.0 +3 | 8.0.131-1.el9_8 | ALSA-2026:67524 |
| AlmaLinux 9 | dotnet-sdk-9.0 +5 | 9.0.121-1.el9_8 | ALSA-2026:67614 |
| AlmaLinux 8 | dotnet +5 | 10.0.112-1.el8_10 | ALSA-2026:68676 |
| AlmaLinux 8 | dotnet-host +8 | 10.0.12-1.el8_10 | ALSA-2026:68676 |
| AlmaLinux 8 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.el8_10 | ALSA-2026:68316 |
| AlmaLinux 8 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.el8_10 | ALSA-2026:68233 |
| AlmaLinux 8 | dotnet-sdk-8.0 +3 | 8.0.131-1.el8_10 | ALSA-2026:68316 |
| AlmaLinux 8 | dotnet-sdk-9.0 +5 | 9.0.121-1.el8_10 | ALSA-2026:68233 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | dotnet10.0 | 10.0.112-1.el10_2 | RLSA-2026:67530 |
| Rocky Linux 10 | dotnet8.0 | 8.0.131-1.el10_2 | RLSA-2026:67525 |
| Rocky Linux 10 | dotnet9.0 | 9.0.121-1.el10_2 | RLSA-2026:67528 |
| Rocky Linux 9 | dotnet10.0 | 10.0.112-1.el9_8 | RLSA-2026:67613 |
| Rocky Linux 9 | dotnet8.0 | 8.0.131-1.el9_8 | RLSA-2026:67524 |
| Rocky Linux 9 | dotnet9.0 | 9.0.121-1.el9_8 | RLSA-2026:67614 |
| Rocky Linux 8 | dotnet10.0 | 10.0.112-1.el8_10 | RLSA-2026:68676 |
| Rocky Linux 8 | dotnet8.0 | 8.0.131-1.el8_10 | RLSA-2026:68316 |
| Rocky Linux 8 | dotnet9.0 | 9.0.121-1.el8_10 | RLSA-2026:68233 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | dotnet10-runtime | 10.0.12-r0 | — |
| Alpine v3.24 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.24 | dotnet9-runtime | 9.0.20-r0 | — |
| Alpine v3.23 | dotnet10-runtime | 10.0.13-r0 | — |
| Alpine v3.23 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.23 | dotnet9-runtime | 9.0.20-r0 | — |
| Alpine v3.22 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.22 | dotnet9-runtime | 9.0.20-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | dotnet +5 | 8.0.131-1.amzn2023.0.2 | ALAS2023-2026-3114, ALAS2023-2026-3113, ALAS2023-2026-3111 |
| Amazon Linux 2023 | dotnet-host +8 | 8.0.31-1.amzn2023.0.2 | ALAS2023-2026-3114, ALAS2023-2026-3113, ALAS2023-2026-3111 |
| Amazon Linux 2023 | dotnet-hostfxr-10.0 +7 | 10.0.12-1.amzn2023.0.2 | ALAS2023-2026-3111 |
| Amazon Linux 2023 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.amzn2023.0.3 | ALAS2023-2026-3113 |
| Amazon Linux 2023 | dotnet-sdk-10.0 +4 | 10.0.112-1.amzn2023.0.2 | ALAS2023-2026-3111 |
| Amazon Linux 2023 | dotnet-sdk-9.0 +4 | 9.0.121-1.amzn2023.0.3 | ALAS2023-2026-3113 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | dotnet-host +8 | 10.0.12-1.0.1.el10_2 | ELSA-2026-67530 |
| Oracle Linux 10 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.0.1.el10_2 | ELSA-2026-67525 |
| Oracle Linux 10 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.0.1.el10_2 | ELSA-2026-67528 |
| Oracle Linux 10 | dotnet-sdk-10.0 +4 | 10.0.112-1.0.1.el10_2 | ELSA-2026-67530 |
| Oracle Linux 10 | dotnet-sdk-8.0 +3 | 8.0.131-1.0.1.el10_2 | ELSA-2026-67525 |
| Oracle Linux 10 | dotnet-sdk-9.0 +5 | 9.0.121-1.0.1.el10_2 | ELSA-2026-67528 |
| Oracle Linux 9 | dotnet-host +8 | 10.0.12-1.0.1.el9_8 | ELSA-2026-67613 |
| Oracle Linux 9 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.0.1.el9_8 | ELSA-2026-67524 |
| Oracle Linux 9 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.0.1.el9_8 | ELSA-2026-67614 |
| Oracle Linux 9 | dotnet-sdk-10.0 +4 | 10.0.112-1.0.1.el9_8 | ELSA-2026-67613 |
| Oracle Linux 9 | dotnet-sdk-8.0 +3 | 8.0.131-1.0.1.el9_8 | ELSA-2026-67524 |
| Oracle Linux 9 | dotnet-sdk-9.0 +5 | 9.0.121-1.0.1.el9_8 | ELSA-2026-67614 |
| Oracle Linux 8 | dotnet +5 | 10.0.112-1.0.1.el8_10 | ELSA-2026-68676 |
| Oracle Linux 8 | dotnet-host +8 | 10.0.12-1.0.1.el8_10 | ELSA-2026-68676 |
| Oracle Linux 8 | dotnet-hostfxr-8.0 +7 | 8.0.31-1.0.1.el8_10 | ELSA-2026-68316 |
| Oracle Linux 8 | dotnet-hostfxr-9.0 +7 | 9.0.20-1.0.1.el8_10 | ELSA-2026-68233 |
| Oracle Linux 8 | dotnet-sdk-8.0 +3 | 8.0.131-1.0.1.el8_10 | ELSA-2026-68316 |
| Oracle Linux 8 | dotnet-sdk-9.0 +5 | 9.0.121-1.0.1.el8_10 | ELSA-2026-68233 |
Advisories 46
- ALSA-2026:67524 Moderate: .NET 8.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:67613 Important: .NET 10.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:67614 Important: .NET 9.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:67528 Important: .NET 9.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:67530 Important: .NET 10.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:67525 Moderate: .NET 8.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:68676 Important: .NET 10.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:68233 Important: .NET 9.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:68316 Moderate: .NET 8.0 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALAS2023-2026-3111 Important: dotnet10.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 28, 2026
- ALAS2023-2026-3113 Important: dotnet9.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 28, 2026
- ALAS2023-2026-3114 Important: dotnet8.0 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 28, 2026
- RHSA-2026:66863 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:77004 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:76978 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68676 Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68316 Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68233 Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67614 Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67613 Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67530 Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67528 Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67525 Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67524 Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- WID-SEC-2026-3242 Microsoft Entwicklerwerkzeuge: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Oct 6, 2026
- RLSA-2026:68676 Important: .NET 10.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 19, 2026
- RLSA-2026:68316 Moderate: .NET 8.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 17, 2026
- RLSA-2026:68233 Important: .NET 9.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 17, 2026
- ELSA-2026-68676 Important: .NET 10.0 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 17, 2026
- ELSA-2026-68316 Moderate: .NET 8.0 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 17, 2026
- ELSA-2026-68233 Important: .NET 9.0 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 17, 2026
- RLSA-2026:67614 Important: .NET 9.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- RLSA-2026:67524 Moderate: .NET 8.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- RLSA-2026:67525 Moderate: .NET 8.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- RLSA-2026:67528 Important: .NET 9.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- RLSA-2026:67530 Important: .NET 10.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- RLSA-2026:67613 Important: .NET 10.0 security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 16, 2026
- ELSA-2026-67614 Important: .NET 9.0 security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 16, 2026
- ELSA-2026-67613 Important: .NET 10.0 security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 16, 2026
- ELSA-2026-67525 Moderate: .NET 8.0 security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 15, 2026
- ELSA-2026-67524 Moderate: .NET 8.0 security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 15, 2026
- ELSA-2026-67530 Important: .NET 10.0 security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 15, 2026
- ELSA-2026-67528 Important: .NET 9.0 security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 15, 2026
- USN-8740-1 dotnet8, dotnet10 vulnerabilities Ubuntu Security Notices (USN) · Sep 10, 2026
- NCSC-2026-0351 Kwetsbaarheden verholpen in Microsoft Developer Tools NCSC-NL (Netherlands) · Sep 8, 2026
- MSRC-CVE-2026-58649 .NET Information Disclosure Vulnerability Microsoft Security Response Center · Sep 8, 2026
References
- .NET Information Disclosure Vulnerability vendor-advisory patch