CVE-2026-26171
CVE-2026-26171 · .NET Denial of Service Vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
CVSS 7.5 · High · EPSS 1.8% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
.net 10.0
- Versions
- ≥ 10.0.0, < 10.0.6: Affected (custom)
Update to 10.0.6
.net 8.0
- Versions
- ≥ 8.0.0, < 8.0.26: Affected (custom)
Update to 8.0.26
.net 9.0
- Versions
- ≥ 9.0.0, < 9.0.15: Affected (custom)
Update to 9.0.15
powershell 7.5
- Versions
- ≥ 7.5.0, < 7.5.6: Affected (custom)
Update to 7.5.6
powershell 7.6
- Versions
- ≥ 7.6.0, < 7.6.1: Affected (custom)
Update to 7.6.1
dotnet6 Ubuntu:22.04:LTS
- Versions
- 6.0.108-0ubuntu1~22.04.1
- 6.0.109-0ubuntu1~22.04.1
- 6.0.110-0ubuntu1~22.04.1
- 6.0.111-0ubuntu1~22.04.1
- 6.0.113-0ubuntu1~22.04.1
- 6.0.116-0ubuntu1~22.04.1
- 6.0.118-0ubuntu1~22.04.1
- 6.0.119-0ubuntu1~22.04.1
- 6.0.120-0ubuntu1~22.04.1
- 6.0.121-0ubuntu1~22.04.1
- 6.0.122-0ubuntu1~22.04.1
- 6.0.123-0ubuntu1~22.04.1
- 6.0.124-0ubuntu1~22.04.1
- 6.0.125-0ubuntu1~22.04.1
- 6.0.126-0ubuntu1~22.04.1
- 6.0.127-0ubuntu1~22.04.1
- 6.0.128-0ubuntu1~22.04.2
- 6.0.132-0ubuntu1~22.04.1
- 6.0.133-0ubuntu1~22.04.1
- 6.0.135-0ubuntu1~22.04.1
- 6.0.136-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dotnet7 Ubuntu:22.04:LTS
- Versions
- 7.0.105-0ubuntu1~22.04.1
- 7.0.107-0ubuntu1~22.04.1
- 7.0.108-0ubuntu1~22.04.1
- 7.0.109-0ubuntu1~22.04.1
- 7.0.110-0ubuntu1~22.04.1
- 7.0.111-0ubuntu1~22.04.1
- 7.0.112-0ubuntu1~22.04.1
- 7.0.113-0ubuntu1~22.04.1
- 7.0.114-0ubuntu1~22.04.1
- 7.0.115-0ubuntu1~22.04.1
- 7.0.116-0ubuntu1~22.04.1
- 7.0.117-0ubuntu1~22.04.1
- 7.0.117-0ubuntu1~22.04.2
- 7.0.119-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dotnet8 Ubuntu:22.04:LTS
- Versions
- 8.0.102-8.0.2-0ubuntu1~22.04.1
- 8.0.103-8.0.3-0ubuntu1~22.04.1
- 8.0.103-8.0.3-0ubuntu1~22.04.2
- 8.0.105-8.0.5-0ubuntu1~22.04.1
- 8.0.107-8.0.7-0ubuntu1~22.04.1
- 8.0.108-8.0.8-0ubuntu1~22.04.1
- 8.0.110-8.0.10-0ubuntu1~22.04.1
- 8.0.111-8.0.11-0ubuntu1~22.04.1
- 8.0.112-8.0.12-0ubuntu1~22.04.1
- 8.0.114-8.0.14-0ubuntu1~22.04.1
- 8.0.115-8.0.15-0ubuntu1~22.04.1
- 8.0.116-8.0.16-0ubuntu1~22.04.1
- 8.0.117-8.0.17-0ubuntu1~22.04.1
- 8.0.118-8.0.18-0ubuntu1~22.04.1
- 8.0.119-8.0.19-0ubuntu1~22.04.1
- 8.0.120-8.0.20-0ubuntu1~22.04.1
- 8.0.121-8.0.21-0ubuntu1~22.04.1
- 8.0.122-8.0.22-0ubuntu1~22.04.1
- 8.0.123-8.0.23-0ubuntu1~22.04.1
- 8.0.124-8.0.24-0ubuntu1~22.04.1
- 8.0.125-8.0.25-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: < 8.0.126-8.0.26-0ubuntu1~22.04.1
Update to 8.0.126-8.0.26-0ubuntu1~22.04.1
dotnet10 Ubuntu:24.04:LTS
- Versions
- 10.0.100-10.0.0-0ubuntu1~24.04.1
- 10.0.101-10.0.1-0ubuntu1~24.04.2
- 10.0.103-10.0.3-0ubuntu1~24.04.1
- 10.0.104-10.0.4-0ubuntu1~24.04.1
- 10.0.105-10.0.5-0ubuntu1~24.04.1
- Affected ranges
- ECOSYSTEM: < 10.0.106-10.0.6-0ubuntu1~24.04.1
Update to 10.0.106-10.0.6-0ubuntu1~24.04.1
dotnet8 Ubuntu:24.04:LTS
- Versions
- 8.0.100-8.0.0~rc1-0ubuntu1
- 8.0.100-8.0.0~rc2-0ubuntu1
- 8.0.100-8.0.0~rc2-0ubuntu2
- 8.0.100-8.0.0-0ubuntu1
- 8.0.100-8.0.0-0ubuntu2
- 8.0.101-8.0.1-0ubuntu1
- 8.0.101-8.0.1-0ubuntu2
- 8.0.102-8.0.2-0ubuntu1
- 8.0.103-8.0.3-0ubuntu2
- 8.0.103-8.0.3-0ubuntu3
- 8.0.104-8.0.4-0ubuntu1
- 8.0.105-8.0.5-0ubuntu1~24.04.1
- 8.0.107-8.0.7-0ubuntu1~24.04.1
- 8.0.108-8.0.8-0ubuntu1~24.04.1
- 8.0.108-8.0.8-0ubuntu1~24.04.2
- 8.0.110-8.0.10-0ubuntu1~24.04.1
- 8.0.111-8.0.11-0ubuntu1~24.04.1
- 8.0.112-8.0.12-0ubuntu1~24.04.1
- 8.0.114-8.0.14-0ubuntu1~24.04.1
- 8.0.115-8.0.15-0ubuntu1~24.04.1
- 8.0.116-8.0.16-0ubuntu1~24.04.1
- 8.0.117-8.0.17-0ubuntu1~24.04.1
- 8.0.118-8.0.18-0ubuntu1~24.04.1
- 8.0.119-8.0.19-0ubuntu1~24.04.1
- 8.0.120-8.0.20-0ubuntu1~24.04.1
- 8.0.121-8.0.21-0ubuntu1~24.04.1
- 8.0.122-8.0.22-0ubuntu1~24.04.1
- 8.0.123-8.0.23-0ubuntu1~24.04.1
- 8.0.124-8.0.24-0ubuntu1~24.04.1
- 8.0.125-8.0.25-0ubuntu1~24.04.1
- Affected ranges
- ECOSYSTEM: < 8.0.126-8.0.26-0ubuntu1~24.04.1
Update to 8.0.126-8.0.26-0ubuntu1~24.04.1
dotnet10 Ubuntu:25.10
- Versions
- 10.0.100-10.0.0~rc1-0ubuntu1
- 10.0.100-10.0.0~rc2-0ubuntu1~25.10.2
- 10.0.100-10.0.0-0ubuntu1~25.10.1
- 10.0.101-10.0.1-0ubuntu1~25.10.2
- 10.0.103-10.0.3-0ubuntu1~25.10.1
- 10.0.104-10.0.4-0ubuntu1~25.10.1
- 10.0.105-10.0.5-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 10.0.106-10.0.6-0ubuntu1~25.10.1
Update to 10.0.106-10.0.6-0ubuntu1~25.10.1
dotnet8 Ubuntu:25.10
- Versions
- 8.0.115-8.0.15-0ubuntu1
- 8.0.116-8.0.16-0ubuntu1
- 8.0.117-8.0.17-0ubuntu1
- 8.0.118-8.0.18-0ubuntu1
- 8.0.119-8.0.19-0ubuntu1
- 8.0.120-8.0.20-0ubuntu1
- 8.0.121-8.0.21-0ubuntu1~25.10.1
- 8.0.122-8.0.22-0ubuntu1~25.10.1
- 8.0.123-8.0.23-0ubuntu1~25.10.1
- 8.0.124-8.0.24-0ubuntu1~25.10.1
- 8.0.125-8.0.25-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 8.0.126-8.0.26-0ubuntu1~25.10.1
Update to 8.0.126-8.0.26-0ubuntu1~25.10.1
dotnet9 Ubuntu:25.10
- Versions
- 9.0.105-9.0.4-0ubuntu1
- 9.0.106-9.0.5-0ubuntu1
- 9.0.107-9.0.6-0ubuntu1
- 9.0.108-9.0.7-0ubuntu1
- 9.0.109-9.0.8-0ubuntu1
- 9.0.110-9.0.9-0ubuntu1
- 9.0.111-9.0.10-0ubuntu1~25.10.1
- 9.0.112-9.0.11-0ubuntu1~25.10.1
- 9.0.113-9.0.12-0ubuntu1~25.10.1
- 9.0.114-9.0.13-0ubuntu1~25.10.1
- 9.0.115-9.0.14-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 9.0.116-9.0.15-0ubuntu1~25.10.1
Update to 9.0.116-9.0.15-0ubuntu1~25.10.1
dotnet10 Ubuntu:26.10
- Versions
- 10.0.105-10.0.5-0ubuntu1
- Affected ranges
- ECOSYSTEM: < 10.0.107-10.0.7-0ubuntu1~26.04.1
Update to 10.0.107-10.0.7-0ubuntu1~26.04.1
dotnet10 Ubuntu:26.04:LTS
- Versions
- 10.0.100-10.0.0~rc1-0ubuntu1
- 10.0.100-10.0.0~rc2-0ubuntu1
- 10.0.100-10.0.0-0ubuntu1
- 10.0.100-10.0.0-0ubuntu2
- 10.0.101-10.0.1-0ubuntu1
- 10.0.101-10.0.1-0ubuntu2
- 10.0.101-10.0.1-0ubuntu3
- 10.0.102-10.0.2-0ubuntu1
- 10.0.103-10.0.3-0ubuntu1
- 10.0.104-10.0.4-0ubuntu1
- 10.0.105-10.0.5-0ubuntu1
- Affected ranges
- ECOSYSTEM: < 10.0.107-10.0.7-0ubuntu1~26.04.1
Update to 10.0.107-10.0.7-0ubuntu1~26.04.1
Original sources
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171
- https://access.redhat.com/security/cve/CVE-2026-26171
- https://bugzilla.redhat.com/show_bug.cgi?id=2457739
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26171.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
- https://nvd.nist.gov/vuln/detail/CVE-2026-26171