Cyber Resilience

CVE-2017-8759

Microsoft .Net Framework 2.0 … 4.7

CISA KEVActive ExploitationEUVD ExploitedPublic PoC
Published
13 September 2017
Modified
22 April 2026
KEV Added
03 November 2021
Patch / advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.87 99.7th percentile
Risk Priority 83 floored blend · peak EPSS

Summary

CVE-2017-8759 is a high-severity Code Injection (CWE-94) vulnerability in Microsoft .Net Framework. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability CVE-2017-8759 is a remote code execution flaw, tracked under CWE-94, that affects Microsoft .NET Framework versions 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, and 4.7. It received a CVSS 3.1 base score of 7.8 reflecting local attack vector, low complexity, no privileges required, and required user interaction, with high impact on confidentiality, integrity, and availability.

An attacker can exploit the issue by supplying a malicious document or application that triggers code execution on the target system when processed by the vulnerable .NET Framework component.

Public references for the CVE include SecurityFocus, SecurityTracker, and multiple GitHub repositories containing assessments and proof-of-concept material.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or application, aka ".NET Framework Remote Code Execution Vulnerability."

CWE(s)
KEV Date Added
03 November 2021

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
T1059.002 AppleScript Execution
Adversaries may abuse AppleScript for execution.
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
T1059.005 Visual Basic Execution
Adversaries may abuse Visual Basic (VB) for execution.
T1059.006 Python Execution
Adversaries may abuse Python commands and scripts for execution.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2015-1635Same product: Microsoft Windows 7both on KEV
CVE-2014-4148Same product: Microsoft Windows 7both on KEV
CVE-2024-21351Same product: Microsoft Windows 10 1507both on KEV
CVE-2013-3906Same product: Microsoft Windows Server 2008both on KEV
CVE-2017-0263Same product: Microsoft Windows 10 1507both on KEV
CVE-2009-0556Same vendor: Microsoftboth on KEV
CVE-2012-0158Same vendor: Microsoftboth on KEV
CVE-2025-49704Same vendor: Microsoftboth on KEV
CVE-2023-24955Same vendor: Microsoftboth on KEV
CVE-2009-0557Same vendor: Microsoftboth on KEV

Affected Assets

microsoft
.net framework
2.0, 3.5, 3.5.1, 4.5.2, 4.6

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V1.3.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-94

Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.

addresses: CWE-94

Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.

addresses: CWE-94

Validates inputs used in dynamic code generation to block injected directives.

addresses: CWE-94

Directly prevents execution of attacker-supplied code written into data memory regions.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).

PR.DS-10 none match
prevents

PR.DS-10 protects runtime data confidentiality/integrity but has no bearing on neutralizing externally influenced input during code generation, so neither direction shows any preventive effect.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

prevents

Banning unapproved code samples and unauthenticated web services, combined with secure-coding standards and SAST, prevents the dynamic generation or inclusion of attacker-supplied code.

none

Controls that restrict unauthorized or malicious code from being introduced via external networks or removable media limit opportunities for an attacker to inject and execute arbitrary code.

References