Is there a public exploit for CVE-2026-114159?

No public exploit for CVE-2026-114159 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-114159?

CVE-2026-114159 scores CVSS 7.7 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.0087%.

What does CVE-2026-114159 affect?

CVE-2026-114159 affects Microsoft.NETCore.App.Runtime.win-x86, Microsoft.NETCore.App.Runtime.win-x64, Microsoft.NETCore.App.Runtime.win-arm64.

7.7 High

Microsoft Security Advisory CVE-2026-114159 - Visual Studio Remote Code Execution Vulnerability

CVE-2026-114159

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET. This advisory provides guidance on updating affected applications and components. An oversized Portable PDB document name can be truncated during allocation and cause a heap out-of-bounds write. CVSS Details Version: 3.1 Severity: High Score: 8.8 (base score) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Weakness: CWE-122 Affected Platforms Platforms: Windows Architectures: x86, x64, Arm64 Affected Packages Microsoft.DiaSymReader.Native components bundled with the affected .NET versions listed below are affected when initializing the native reader with a Portable PDB containing an oversized document name. The Windows runtime's native stack-trace reader can reach this initialization through its native-reader fallback. .NET on Windows Product | Affected version | Patched version | --- | --- .NET 8.0 installed on Windows | >= 8.0.0, = 9.0.0, = 10.0.0, = 11.0.0-preview.1, = 8.0.0, = 8.0.0, = 8.0.0, = 9.0.0, = 9.0.0, = 9.0.0, = 10.0.0, = 10.0.0, = 10.0.0, = 11.0.0-preview.1, = 11.0.0-preview.1, = 11.0.0-preview.1, = 8.0.100-0, = 8.0.400-0, =…

Assessment

CVSS: 7.7 (v3.1)
Severity: High
EPSS: 0.0087% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 11 November 2026
Last updated: 11 November 2026
Affected: Microsoft.NETCore.App.Runtime.win-x86 · Microsoft.NETCore.App.Runtime.win-x64 · Microsoft.NETCore.App.Runtime.win-arm64
Weakness: CWE-122

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

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