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CVE-2026-108398— .NET Framework Security Feature Bypass Vulnerability

Quick assessment

Affected
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

.NET Framework 中存在不受信任的搜索路径问题，允许经过认证的攻击者在本地绕过一项安全特性。

CVSS 8.8 · High EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1574.001 · DLL

Affected Version Matrix 7

VendorProduct Version RangeStatus
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 3.0.0.0< 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 affected
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.0< 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.0< 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 4.8.1< 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 affected
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.0< 4.7.4150.0 affected
Microsoft Microsoft .NET Framework 4.8 4.8.0< 4.8.4811.0 affected
Microsoft Microsoft .NET Framework 4.8.1 4.8.0.0< 4.8.9363.0 affected
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I. Basic Information for CVE-2026-108398

Vulnerability Information
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Vulnerability Title
.NET Framework Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可信的搜索路径
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 3.0.0.0 ~ 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0 -
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.0 ~ 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 -
Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.0 ~ 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 -
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 4.8.1 ~ 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 -
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.0 ~ 4.7.4150.0 -
Microsoft Microsoft .NET Framework 4.8 4.8.0 ~ 4.8.4811.0 -
Microsoft Microsoft .NET Framework 4.8.1 4.8.0.0 ~ 4.8.9363.0 -

II. Public POCs for CVE-2026-108398

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III. Intelligence Information for CVE-2026-108398

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Vendor Advisories for CVE-2026-108398 (1)

Same Patch Batch · Microsoft · 2026-10-13 · 1407 CVEs total

CVE-2026-96219 9.8 CRITICAL Windows Local Security Authority Subsystem Service (LSASS) Remote Code Execution Vulnerabi
CVE-2026-70096 9.8 CRITICAL Windows Rich Text Edit Control Remote Code Execution Vulnerability
CVE-2026-85928 9.8 CRITICAL Windows Volume Manager Extension Driver Remote Code Execution Vulnerability
CVE-2026-88102 9.8 CRITICAL Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-70024 9.8 CRITICAL Windows Internet Information Services Remote Code Execution Vulnerability
CVE-2026-70147 9.8 CRITICAL Microsoft PostScript Printer Driver Remote Code Execution Vulnerability
CVE-2026-70242 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-70291 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-70153 9.8 CRITICAL Microsoft PostScript Printer Driver Remote Code Execution Vulnerability
CVE-2026-70300 9.8 CRITICAL Microsoft Office Word Remote Code Execution Vulnerability
CVE-2026-88156 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-88178 9.8 CRITICAL Microsoft Office PowerPoint Remote Code Execution Vulnerability
CVE-2026-100202 9.8 CRITICAL Windows Message Queuing Queue Manager Remote Code Execution Vulnerability
CVE-2026-97814 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability
CVE-2026-97815 9.8 CRITICAL Windows Error Reporting Remote Code Execution Vulnerability
CVE-2026-96113 9.8 CRITICAL Windows Domain Name Service Remote Code Execution Vulnerability
CVE-2026-97805 9.8 CRITICAL Windows Partition Management Driver Remote Code Execution Vulnerability
CVE-2026-70157 9.8 CRITICAL Windows System Information Console Remote Code Execution Vulnerability
CVE-2026-83770 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability
CVE-2026-102210 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability

Showing top 20 of 1407 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Same vendor: Microsoft
Same weakness: CWE-426

V. Comments for CVE-2026-108398

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