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Red Hat Security Advisory

RHSA-2026:58570

.NET 9.0 security, bug fix, and enhancement update

Released 2026-08-24 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 21 records

Priority MEDIUM 43

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

CVSS 3.1HIGH 7.8 Local No auth User interaction EPSS 0.04017 Published 2026-07-14 Fixed in 8.0.29, 9.0.18 +8 CWE-502
Priority MEDIUM 43

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

CVSS 3.1HIGH 7.8 Local No auth User interaction EPSS 0.04017 Published 2026-07-14 Fixed in 8.0.29, 9.0.18 +10 CWE-502
TI-2026-37262 CVE-2026-50528 · GHSA-qvw7-jm5c-6hqw

.NET Security Feature Bypass Vulnerability

Priority MEDIUM 43

Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00609 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-302
TI-2026-34881 CVE-2026-47304 · GHSA-g8r8-53c2-pm3f

.NET Security Feature Bypass Vulnerability

Priority MEDIUM 43

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00286 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +12 CWE-345
Priority MEDIUM 42

Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00841 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-302
TI-2026-44960 CVE-2026-62901 · GHSA-m93f-wj8c-rp8p

.NET Denial of Service Vulnerability

Priority MEDIUM 41

Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01232 Published 2026-08-11 Fixed in 10.0.11, 8.0.30 +3 CWE-606
TI-2026-41095 CVE-2026-57108 · GHSA-rp2p-6cmp-jxj9

.NET Denial of Service Vulnerability

Priority MEDIUM 41

Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +1 CWE-843
TI-2026-40544 CVE-2026-56170 · GHSA-j8gr-8fp3-5q5h

ASP.NET Core Denial of Service Vulnerability

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 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-770
TI-2026-37340 CVE-2026-50651 · GHSA-wp74-jgxh-gv4q

.NET Denial of Service Vulnerability

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 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-770
Priority MEDIUM 41

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

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +11 CWE-770
Priority MEDIUM 41

Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +11 CWE-121
TI-2026-37259 CVE-2026-50525 · GHSA-8q5v-6pqq-x66h

.NET Denial of Service Vulnerability

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 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +12 CWE-770
Priority MEDIUM 41

Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to deny service over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01232 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-1287
TI-2026-34879 CVE-2026-47302 · GHSA-cvvh-rhrc-wg4q

.NET Denial of Service Vulnerability

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 0.01174 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +11 CWE-770
Priority MEDIUM 41

Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00778 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-303
TI-2026-44965 CVE-2026-62909 · GHSA-9mr8-pwpw-3j2w

.NET Elevation of Privilege Vulnerability

Priority LOW 36

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00343 Published 2026-08-11 Partial fix · 10.0.11, 8.0.30 +3 CWE-252
Priority LOW 36

Improper control of generation of code ('code injection') in .NET Framework allows an unauthorized attacker to elevate privileges locally.

CVSS 3.1HIGH 7.8 Local No auth User interaction EPSS 0.00462 Published 2026-07-14 Fixed in 8.0.29, 9.0.18 +10 CWE-94
TI-2026-37260 CVE-2026-50526 · GHSA-55jh-fwmh-39m4

.NET Tampering Vulnerability

Priority LOW 32

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

CVSS 3.1HIGH 7.0 Local Low privileges No interaction EPSS 0.00224 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +4 CWE-345
TI-2026-37347 CVE-2026-50659 · GHSA-74jp-vm22-8q8x

.NET Spoofing Vulnerability

Priority LOW 30

Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.

CVSS 3.1MEDIUM 6.5 Network Low privileges No interaction EPSS 0.00738 Published 2026-07-14 Fixed in 10.0.10, 8.0.29 +11 CWE-116
TI-2026-44959 CVE-2026-62900 · GHSA-23fw-v26w-5fgq

.NET Information Disclosure Vulnerability

Priority LOW 28

Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00749 Published 2026-08-11 Partial fix · 10.0.11, 8.0.30 +5 CWE-212
TI-2026-44958 CVE-2026-62899 · GHSA-r6mh-95jw-g7qg

.NET Security Feature Bypass Vulnerability

Priority LOW 28

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

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00749 Published 2026-08-11 Partial fix · 10.0.11, 8.0.30 +3 CWE-444