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Red Hat Security Advisory

RHSA-2026:86193

.NET 10.0 security, bug fix, and enhancement update

Released 2026-10-20 · Red Hat rating Critical · View on Red Hat →

Fixed in

Fixes 26 records

Priority MEDIUM 50

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.

CVSS 3.1CRITICAL 9.4 Network No auth No interaction EPSS 0.00934 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-444
Priority MEDIUM 49

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00938 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-444
Priority MEDIUM 42

Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.

CVSS 3.1HIGH 8.8 Network No auth User interaction EPSS 0.00906 Published 2026-10-13 Fixed in 10.0.403, 11.0.100-rc.3 +8 CWE-94
Priority MEDIUM 42

Improper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network.

CVSS 3.1HIGH 8.8 Network No auth User interaction EPSS 0.00946 Published 2026-10-13 Fixed in 17.14.42, 18.10.4 +4 CWE-79
Priority MEDIUM 41

Asymmetric resource consumption (amplification) in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01203 Published 2026-10-13 Fixed in 2.0.50727.9188 AND 3.0.30729.9171, 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 +10 CWE-405
Priority MEDIUM 41

Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00969 Published 2026-10-13 Fixed in 2.0.50727.9188 AND 3.0.30729.9171, 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 +10 CWE-770
Priority MEDIUM 41

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01203 Published 2026-10-13 Fixed in 2.0.50727.9188 AND 3.0.30729.9171, 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 +10 CWE-407
Priority MEDIUM 41

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01086 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-770
Priority MEDIUM 41

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00991 Published 2026-10-13 Fixed in 2.0.50727.9188 AND 3.0.30729.9171, 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 +11 CWE-407
Priority MEDIUM 41

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00959 Published 2026-10-13 Fixed in 10.0.13, 8.0.32 +3 CWE-833
Priority MEDIUM 41

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.0123 Published 2026-10-13 Fixed in 10.0.13, 8.0.32 +3 CWE-770
Priority MEDIUM 41

Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.0125 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +12 CWE-674
Priority LOW 36

Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to execute code over a network.

CVSS 3.1HIGH 7.5 Network No auth User interaction EPSS 0.00638 Published 2026-10-13 Fixed in 10.0.113, 8.0.132 +3 CWE-829
Priority LOW 36

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00411 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-59
Priority LOW 36

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00411 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-59
Priority LOW 36

Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

CVSS 3.1HIGH 7.5 Network Low privileges No interaction EPSS 0.00629 Published 2026-10-13 Fixed in 17.14.42, 18.10.4 +3 CWE-290
Priority LOW 35

Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

CVSS 3.1HIGH 7.5 Network Low privileges No interaction EPSS 0.00531 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-362
Priority LOW 28

Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.0091 Published 2026-10-13 Fixed in 10.0.13, 8.0.32 +3 CWE-407
Priority LOW 28

Insertion of sensitive information into sent data in .NET allows an unauthorized attacker to disclose information over a network.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00785 Published 2026-10-13 Fixed in 10.0.13, 11.0.0-rc.2 +4 CWE-201