CVE-2017-8759

Microsoft .NET Framework Remote Code Execution

7.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 88.7%

Published12 Sept 2017
Added to CISA KEV3 Nov 2021
Remediation due3 May 2022

Description

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."

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft .net Framework2.0 · 3.5 · 3.5.1 · 4.5.2

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8759

References

https://github.com/bhdresh/CVE-2017-8759ExploitThird Party Advisory
https://github.com/GitHubAssessments/CVE_Assessments_01_2020Third Party Advisory
https://github.com/nccgroup/CVE-2017-8759ExploitThird Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8759PatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8759US Government Resource
https://www.exploit-db.com/exploits/42711/Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/100742Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039324Broken LinkThird Party AdvisoryVDB Entry

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2017-8759 being actively exploited?

Yes. CVE-2017-8759 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2017-8759?

CVE-2017-8759 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 88.7% probability of exploitation.

Which products are affected by CVE-2017-8759?

Affected products include Microsoft .net Framework.

How do I fix CVE-2017-8759?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2017-8759 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.