Detections
Analytics

TencentOS Server 3: .NET 8.0 (TSSA-2026:0770)

critical Nessus Plugin ID 330254

Synopsis

The remote TencentOS Server 3 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0770 advisory.

 Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

 CVE-2026-47300:
 Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

 CVE-2026-47302:
 Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

 CVE-2026-47303:
 Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

 CVE-2026-47304:
 Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

 CVE-2026-50524:
 Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to deny service over a network.

 CVE-2026-50525:
 Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

 CVE-2026-50526:
 Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.

 CVE-2026-50527:
 Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.

 CVE-2026-50528:
 Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.

 CVE-2026-50646:
 Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

 CVE-2026-50648:
 Allocation of resources without limits or throttling in .NET Framework allows an unauthorized attacker to deny service over a network.

 CVE-2026-50649:
 Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

 CVE-2026-50650:
 Improper control of generation of code ('code injection') in .NET Framework allows an unauthorized attacker to elevate privileges locally.

 CVE-2026-50651:
 Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

 CVE-2026-50659:
 Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.

 CVE-2026-56170:
 Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

 CVE-2026-57108:
 Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://mirrors.tencent.com/tlinux/errata/tssa-20260770.xml

Plugin Details

Severity: Critical

ID: 330254

File Name: tencentos_TSSA_2026_0770.nasl

Version: 1.1

Type: Local

Published: 7/28/2026

Updated: 7/28/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.14

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-47304

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:3, p-cpe:/a:tencent:tencentos_server:dotnet8.0

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/20/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-47300, CVE-2026-47302, CVE-2026-47303, CVE-2026-47304, CVE-2026-50524, CVE-2026-50525, CVE-2026-50526, CVE-2026-50527, CVE-2026-50528, CVE-2026-50646, CVE-2026-50648, CVE-2026-50649, CVE-2026-50650, CVE-2026-50651, CVE-2026-50659, CVE-2026-56170, CVE-2026-57108